Try to block the scattered flammable and combustible liquids; 4. Demolition of flammable buildings adjacent to the fire source to form a space zone to prevent the spread of fire. Asphyxiation The suffocation fire extinguishing method is a fire extinguishing method that prevents the air from flowing into the combustion zone or uses the incombustible zone or dilutes the air with incombustible substances, so that the burning substance does not get enough oxygen and extinguishes. The specific method is: 1. Cover the burning material with incombustible or non-combustible substances such as sand, cement, wet sack, wet quilt; 2. Spraying water spray, dry powder, foam and other fire extinguishing agents to cover the burning material; 3. Fill containers and equipment in fire with water vapor, nitrogen, carbon dioxide and other inert gases; 4. Airtight fire buildings, equipment and holes; 5. Spray non-combustible gas or non-combustible liquid such as carbon dioxide, nitrogen, carbon tetrachloride, etc. Into the combustion area or on the combustion materialElectrical accidents Electrical hazards A hazard is something that has the potential to cause harm. Electricity is a hazard, as it can cause severe injury and even death. The main hazards are: Contact with live electrical parts resulting in electric shock and burns. Electrical faults, causing fires. Fire or explosions from electricity igniting a flammable or explosive atmosphere. Uncontrolled electrical hazards can cause Electrical injuries. Severe pain Heart failure Breathing difficulties Muscle spasms, which can cause other injuries such as fractures Tissue, nerve and muscle damage Burns Electrocution Arc flash Electric shock Other serious injuries Fires or explosions, posing a threat to life, property, and the overall safety of a place and its occupantsElectric shock A person can receive an electric shock if they come into contact with live electrical parts or if electricity arcs. An electric shock can result in minor or severe harm. It can also cause death, which is known as electrocution. Coming into contact with live electrical parts can: Cause severe pain. Stop the heart from beating properly. Prevent a person from breathing.


Coming into contact with live electrical parts can: Cause severe pain. Stop the heart from beating properly. Prevent a person from breathing. Cause muscle spasms, which can cause other injuries such as fractures. Cause tissue, nerve and muscle damage. The injuries from an electric shock are varied and will depend on: The voltage and current The higher the voltage and current, the likelihood of death increases. However, just 50 volts AC can cause a person s heart to stop and prevent breathing. The path of the current If it travels through vital organs, it can cause more damage. The length of exposure to the current Injuries will be more severe if exposed for longer. The resistance Wet skin reduces resistance and allows for the current to flow more freely. It is the electrical current that makes electricity dangerous, as it can flow through the body. Alternating current AC is considered more dangerous than direct current DC , as it can cause internal damage even at a smaller magnitude. However, both AC and DC are dangerous, above a particular voltage, and have different effects on the body. The voltage allows the current to enter the body, as it reduces the resistance. It is not always the electric shock that causes injury either. It can contribute to other accidents, e.g. falling from a ladder whilst working at height. Burns When an electrical current flows through the body, it heats tissues as it travels, which can cause severe burns and internal tissue damage. Electrical burns can be severely disabling and can leave extensive scarring. Severe burns may even result in major surgery and amputations. Burns are more common with high voltages, but they can occur at 230 volts if the current flows for longer. Burns can also occur when a person: Receives an electric shock due to arcing jumping . Arcing also creates ultraviolet radiation, which can damage a person s eyes. Touches electrical equipment that has become hot due to a fault thermal burns . Is caught in a fire caused by an electrical fault. Fire and explosion Workers do not have to come into direct contact with electricity to be harmed by it. Electricity can be an ignition source, which can cause fires and even explosions if there is an explosive atmosphere. Electrical accidents involving fires and explosions can result in multiple fatalities, severe injuries and extensive property damage.


Fire and explosion Workers do not have to come into direct contact with electricity to be harmed by it. Electricity can be an ignition source, which can cause fires and even explosions if there is an explosive atmosphere. Electrical accidents involving fires and explosions can result in multiple fatalities, severe injuries and extensive property damage. Injuries can vary depending on the seriousness of the fire explosion and how far a person is from the event. Most electrical accidents and injuries occur as a result of the following: Not isolating electrical installations and equipment properly before working on them. Working on or near live electrical systems thought to be dead. Inadequate information and instruction provided on electrical risks. A lack of training and competence to undertake tasks involving electricity. Inadequate training is one of the main causes of electrical accidents. An unsafe safe system of work. Using electrical equipment in wet conditions or touching it with wet hands. Faulty, damaged and defective electrical systems, wiring and equipment. Misuse of electrical equipment and appliances. Poor design, construction and installation of electrical installations and wiring. Overloading of electrical systems causing them to overheat, e.g. plugging too many devices into a circuit and using incorrectly rated fuses. Inadequate maintenance, inspection and testing of electrical systems and equipment. The risk of an electrical accident will be higher for those working directly on or adjacent to live electrical equipment and with higher voltages. However, all workers and others on the premises are at some risk where electricity is used in the workplace In addition to the hierarchy of control, other measures can also minimize electrical risks. Here are some tips: Do Ensure the power supply is regularly tested by a competent person and taken out of service if unsafe. Keep isolators and other electrical systems clear at all times and clearly identify them with signs. Ensure anyone working with electricity is trained and competent. The level required will depend on the task, e.g. maintenance of electrical equipment will require a higher level of training and competence. Use portable electrical equipment safely, e.g. not misusing it, using it for its intended purpose and storing it properly after use. Fully pull out electrical extension reels when in use to prevent overheating. When defrosting raw foods, keep them away from other foods to prevent cross-contamination. Complete a pre-use check of electrical equipment to ensure it is safe.


Fully pull out electrical extension reels when in use to prevent overheating. When defrosting raw foods, keep them away from other foods to prevent cross-contamination. Complete a pre-use check of electrical equipment to ensure it is safe. Switch off and unplug electrical equipment during maintenance, cleaning, repairing or adjusting. Switch off all non-essential electrical equipment at the end of the working day. Not only is this safer, but it also saves energy. Do not Do not overload sockets, as this can cause overheating and fire. Do not force a plug into a socket if it does not fit. Do not route electrical cables where they could be damaged or where someone could trip. Use cable protectors if they cannot be re-routed. Do not use electrical equipment with wet hands or near water. Do not keep liquids by electrical equipment, e.g. open drinks next to computers. Do not plug multiple extension leads together daisy-chaining . Do not pull electrical equipment out of a socket by its lead. Always grip the plug. Electrical shock: First aid The danger from an electrical shock depends on the type of current, how high the voltage is, how the current traveled through the body, the person's overall health and how quickly the person is treated. An electrical shock may cause burns, or it may leave no visible mark on the skin. In either case, an electrical current passing through the body can cause damage inside the body, cardiac arrest or other injury. Under certain circumstances, even a small amount of electricity can be fatal. When to contact your doctor A person who has been injured by contact with electricity should be seen by a health care provider. Symptoms of an electrical injury Often, the main symptom of the electrical injury is a skin burn. High-voltage injuries may cause severe internal burns. If muscle damage is extensive, it swells to the extent that the arteries are compressed. Toddlers who bite or suck on extension cords can burn their mouth and lips, causing added deformities and growth problems of the face and other facial structures. A minor shock may cause muscle pain causing the person to startle and or fall. The electricity may also cause abnormal heart rhythms causing heart problems or exacerbating current ones. The nerves and brain may also be affected which may cause memory and behavioral problems.


A minor shock may cause muscle pain causing the person to startle and or fall. The electricity may also cause abnormal heart rhythms causing heart problems or exacerbating current ones. The nerves and brain may also be affected which may cause memory and behavioral problems. Caution Don't touch an injured person who is still in contact with an electrical current. Call your local emergency number if the source of the burn is a high-voltage wire or lightning. Don't get near high-voltage wires until the power is turned off. Overhead powerlines usually aren't insulated. Stay at least 20 feet about 6 meters away farther if wires are jumping and sparking. Don't move a person with an electrical injury unless there is immediate danger. When to seek emergency care Call your local emergency number if the injured person experiences: Severe burns Confusion Difficulty breathing Heart rhythm problems Cardiac arrest Muscle pain and contractions Seizures Loss of consciousness Take these actions immediately while waiting for medical help: 1. Turn off the source of electricity, if possible. If not, use a dry, nonconducting object made of cardboard, plastic or wood to move the source away from you and the injured person. 2. Begin CPR if the person shows no signs of circulation, such as breathing, coughing or movement. 3. Try to prevent the injured person from becoming chilled. 4. Apply a bandage. 5. Separate the person from the current source before giving any first aid. 6. Call the emergency number or nearby medical responders if available . 7. If the electricity source cannot be turned off, use insulating objects such as brooms or chair to push the person affected away from the currentElectrical Injuries: first aid Electrical injuries occur when an electrical current passes through the body that causes inadvertent damage and burns to the internal organs thereby affecting their functions. Faulty electrical lines, machinery and appliances may result in an electrical injury. Others causes of electrical injuries may occur with contact with household wiring or power lines. There are a number of factors that determine the intensity of the injury such as the type of current, the duration of exposure and many others. This page will outline the symptoms and management of an electrical burn. This page is for learning purposes only.


There are a number of factors that determine the intensity of the injury such as the type of current, the duration of exposure and many others. This page will outline the symptoms and management of an electrical burn. This page is for learning purposes only. To learn to recognize and manage minor and severe electrical burns register for a Canadian standard first aid course with one of our training providers. First Aid for an electrical injury Check for breathing Separate the person from the current source before giving any first aid. Turn off the electrical current, unplug the cord, turn off or remove the fuse from the fuse box. Simply turning off the appliance or machine may not stop the electricity flow. Call the emergency number or nearby medical responders if available If the electricity source cannot be turned off, use insulating objects such as brooms or chair to push the person affected away from the current. Do not use wet or metal objects and ensure that you are standing on something dry and does not conduct electricity such as rubber mat or newspapers Once the person is away the source of electricity, check the person s airway and breathing pattern as well as the person s pulse. If you notice a burn in the person s body, remove the clothing over the affected area and rinse the burned area with cool running water until the pain subsides. Do not apply anything ice, water, toothpaste or ointments on the affected site; do not break the blisters; never remove the dead skin. If the person fainted and become unconscious, lay him down his back with his head slightly lower than the rest of the body and cover him with a warm blanket. If you suspect cervical or spine injury related to electrical injury, never move the person. Speak to a doctor about medication for pain. Composite materials A composite material is a combination of two materials with different physical and chemical properties. When they are combined they create a material which is specialized to do a certain job, for instance to become stronger, lighter or resistant to electricity. They can also improve strength and stiffness.


Composite materials A composite material is a combination of two materials with different physical and chemical properties. When they are combined they create a material which is specialized to do a certain job, for instance to become stronger, lighter or resistant to electricity. They can also improve strength and stiffness. The reason for their use over traditional materials is because they improve the properties of their base materials and are applicable in many situations Common composite materials include Masonry and reinforced concrete Composite wood, such as Plywood Reinforced plastics, such as fiberglass Ceramic matrix composites Metal matrix composites Various other advanced composite material What are the Different Types? Some common composite materials include: Ceramic matrix composite: Ceramic spread out in a ceramic matrix. These are better than normal ceramics as they are thermal shock and fracture resistant Metal matrix composite: A metal spread throughout a matrix Reinforced concrete: Concrete strengthened by a material with high tensile strength such as steel reinforcing bars Glass fibre reinforced concrete: Concrete which is poured into a glass fibre structure with high zirconia content Translucent concrete: Concrete which encases optic fibres Engineered wood: Manufactured wood combined with other cheap materials. One example would be particle board. A specialty material like veneer can also be found in this composite Plywood: Engineered wood by gluing many thin layers of wood together at different angles Engineered bamboo: Strips of bamboo fibre glued together to make a board. This is a useful composite due to the fact it has higher compressive, tensile and flexural strength than wood Parquetry: A square of many wood pieces put together often out of hardwood. It is sold as a decorative piece Wood-plastic composite: Either wood fibre or flour cast in plastic Cement-bonded wood fibre: Mineralized wood pieces cast in cement. This composite has insulating and acoustic properties Fiberglass: Glass fibre combined with a plastic which is relatively inexpensive and flexible Carbon Fibre reinforced polymer: Carbon fibre set in plastic which has a high strength-to-weight ratio Sandwich panel: A variety of composites that are layered on top of each other Composite honeycomb: A selection of composites in many hexagons to form a honeycomb shape. Papier-m ch : Paper bound with an adhesive.


It is sold as a decorative piece Wood-plastic composite: Either wood fibre or flour cast in plastic Cement-bonded wood fibre: Mineralized wood pieces cast in cement. This composite has insulating and acoustic properties Fiberglass: Glass fibre combined with a plastic which is relatively inexpensive and flexible Carbon Fibre reinforced polymer: Carbon fibre set in plastic which has a high strength-to-weight ratio Sandwich panel: A variety of composites that are layered on top of each other Composite honeycomb: A selection of composites in many hexagons to form a honeycomb shape. Papier-m ch : Paper bound with an adhesive. These are found in crafts Plastic coated paper: Paper coated with plastic to improve durability. An example of where this is used is in playing cards Syntactic foams: Light materials created by filling metals, ceramics or plastics with micro balloons. These balloons are made using either glass, carbon or plastic Careers related to use of composite materials Careers in the fibre glass and plastics industry 1. Grinder Primary duties: Grinders are responsible for operating, maintaining and repairing machines that break large plastics into smaller pieces for processing purposes. They follow specified instructions and engage in a variety of grinding activities. Grinders work closely with other plastics employees to prevent loss of production and keep production efficient. Prior to a grinding operation, they inspect machinery to prevent any potential malfunctions. They also lubricate the grinding wheels so the machine is able to grind more effectively. After grinding plastics, they may also use hand tools to file or finish the surface of the plastic product. 2. Blow molding technician Primary duties: Blow molding technicians are responsible for operating machines that mold plastic objects by blowing air into the plastic, causing it to expand. They assemble blow molding machines, maintain them and make repairs as necessary. They also provide instructions to the employees who cut and prepare the molded parts. Blow molding technicians ensure the general cleanliness of blow molding machines and may perform thorough inspections of both the machines and any blow molding equipment prior to using them. They may also assist with thetraining of additional molding personnel and educate them about important safety processes. 3. Patternmaker Primary duties: Patternmakers are responsible for creating plastic foundry patterns and making sure that patterns conform to the desired specifications. They use measuring instruments like scales and micrometers to measure plastic items and operate machines like drill presses to produce more distinct patterns.


3. Patternmaker Primary duties: Patternmakers are responsible for creating plastic foundry patterns and making sure that patterns conform to the desired specifications. They use measuring instruments like scales and micrometers to measure plastic items and operate machines like drill presses to produce more distinct patterns. They may also adapt or repair a damaged pattern or a template and use computer-aided design software to produce new designs. Patternmakers frequently work with plastic manufacturers and other professionals to ensure their patterns are accurate. 4. Plastic manufacturer Primary duties: Plastic manufacturers are responsible for molding, casting and assembling products made from plastic, including combs, dishes, toys, car parts and a number of other items. They ensure the machines that help to construct the items function properly. During blow molding, injection molding and compression molding, they engage in quality control processes to ensure the products meet the specified requirements. They may use blenders or color mixers to produce colored plastic materials and mix different colors together. When working around hot machines and plastics and drilling and cutting plastic parts, manufacturers often employ safety precautions to prevent potential accidents. 5. Quality control technician Primary duties: Quality control technicians are responsible for performing inspections of finished plastic goods, checking the dimensions of goods to ensure they're compliant with desired specifications, monitoring for various defects and establishing a system to report and repair defects. Technicians often help to train the plastics employees who create and assemble the plastic goods and instruct them on how to best exceed customer expectations and produce high-quality goods. They create and implement a set of quality control standards and communicate any quality issues to production managers and supervisors. They may also conduct regular audits of a facility's overall operations. 6. Production supervisorPrimary duties: Production supervisors are responsible for managing and leading plastics and manufacturing employees. They coordinate production activities with suppliers to optimize machines, employees and processes. Production supervisors create production schedules for employees to follow to ensure the timely shipment of goods, review production and operating reports, help solve maintenance and manufacturing issues, document operations procedures and establish channels of communication to allow for additional accountability between management and employees. They may also assist with the preparation of new moldings, equipment and supplies, and train and educate new plastics employees on production processes. 7. Mold maker Primary duties: A mold maker in the plastics industry is responsible for producing precision moldings and ensuring that they can mass-produce each molding with a high degree of accuracy. Precision moldings are plastic moldings that eventually become high-quality consumer goods. Mold makers mix modeling materials with other substances to create molds.


Mold maker Primary duties: A mold maker in the plastics industry is responsible for producing precision moldings and ensuring that they can mass-produce each molding with a high degree of accuracy. Precision moldings are plastic moldings that eventually become high-quality consumer goods. Mold makers mix modeling materials with other substances to create molds. They also adapt and modify molds for plastic injection moldings and other operations. Prior to the molding process, a mold maker might use measuring and gauging tools to perform an inspection before a large-scale molding operation. They may also provide assistance to millwrights and machinists during the injection molding process. 8. Maintenance manager National average salary: 70,148 per year Primary duties: Maintenance managers in the plastics industry are responsible for making repairs to manufacturing equipment, improving injection molding and managing other maintenance employees. They help manage the movement of plastic molds to and from manufacturing facilities, track expenditures and labor costs to ensure compliance with the manufacturing facility's budget and implement programs to reduce costs and improve production processes. They also manage bids for construction work and research new processes to implement to improve output. Maintenance managers frequently monitor plastics employees to ensure they're in compliance with health, safety and environmental regulations and ordinances. 9. Assembler Primary duties: In the plastics industry, assemblers are responsible for assembling a variety of plastic products, in addition to tools and machinery. They create, decorate and package finished goods according to specifications and work instructions. Assemblers often inspect and test the finished goods for defects prior to packaging them and notify a production manager if they find any. They may also label the product according to available instructions and meet with supervisors and other plastics personnel to discuss the implementation of new safety regulations and work standards. 10. Plastics engineer Primary duties: Plastics engineers are responsible for designing and creating materials, molds, tools and other items made from plastic. They develop and assemble new injection molding equipment, manage plastics projects, provide other engineers with assistance during the plastics production process and ensure other engineers follow any applicable safety requirements. They also work to find ways to lower the cost of manufacturing and analyze customer requirements to ensure all molded products are of high quality. Plastics engineers may also perform tests of the finished products and establish specifications for new product designs. 11. Injection mold operator Primary duties: Injection mold operators are responsible for assembling and operating machines that shape plastic.


Plastics engineers may also perform tests of the finished products and establish specifications for new product designs. 11. Injection mold operator Primary duties: Injection mold operators are responsible for assembling and operating machines that shape plastic. They implement quality control measures to ensure each mold meets the required specifications, manage any issues that might arise during the molding process, make any necessary repairs to machinery and perform routine maintenance and order new parts, if necessary. Injection mold operators help to ensure that the work environment is safe and that all employees follow any applicable health and safety regulations. They may assemble a variety of molding equipment according to design directions or building blueprints and clean the equipment after using it. 12. Plant manager Primary duties: Plant managers in the plastics industry are responsible for the daily operations of a plastics department or manufacturing facility. They helpsupervise plastics employees and provide them with regular operational and developmental training. Plant managers develop and implement strategic plans to enhance production and make quality improvements. They review manufacturing processes and look for opportunities to make innovations, reduce costs and improve the quality of finished goods. They may also research different types of plastics to determine which ones are likely to be the most effective Careers in Construction With Salaries and Duties The construction industry offers a variety of careers with work on commercial, industrial, private or civil engineering projects. Whether new construction, renovations and remodeling or performing maintenance and repairs, the construction field is a strong employment option for many. Knowing about the various careers in construction and what they do and earn can help you decide if it's the field for you. 1. Tile setter Primary duties: A tile setter covers walls, floors, ceilings and stairs with various tile materials, like ceramic, porcelain, marble, terrazzo or mosaic. They mix and apply setting materials like grout, ensure the proper placement and clean the tilesafter installation. Tile setters often work for construction companies or masonry contractors or are self-employed. 2. Drywall finisher Primary duties: A drywall finisher measures, cuts and sets drywall panels around mechanical structures, wall frames or other building elements and can create simple or ornamental surfaces through various application methods and tools. They apply the finish material and restore or maintain plaster or putty on partitions, ceilings and interior or exterior walls. Drywall finishers even out dents, apply the desired coating or color and level off the top layers of the exterior of a building. 3. Quantity surveyor Primary duties: A quantity surveyor is responsible for setting and managing the budgets for construction projects.


Drywall finishers even out dents, apply the desired coating or color and level off the top layers of the exterior of a building. 3. Quantity surveyor Primary duties: A quantity surveyor is responsible for setting and managing the budgets for construction projects. They visit job sites and review blueprints to prepare estimates, and they negotiate contracts to secure specific prices for their clients. Quantity surveyors also complete administrative tasks, such as documents detailing and recording project costs and reconciling project versus company finances. 4. Roofer Primary duties: A roofer is a skilled trade worker who specializes in roof construction. They replace, repair or install the roof on nearly any type of architecture from single-family homes and garages to large-scale buildings, like hospitals, schools or shopping malls. They are knowledgeable about various roofing styles, like gabled, flat, gambrel or hip roofs. Roofers help customers or project managers choose from tiles, wood shingles, metal or other roofing materials and coordinate to ensure projects finish on time. 5. Elevator technician Primary duties: An elevator technician, also called an elevator mechanic, installs, assembles, replaces or maintains large equipment like elevators, escalators, moving walkways, or chairlifts. They may do large-scale installations, like assembling several pieces of each equipment type at an airport or shopping mall, or do smaller installations, like one elevator in an office building. 6. Sprinkler fitter Primary duties: A sprinkler fitter is a type of plumber who installs, modifies, inspects, tests, and repairs sprinkler systems. They install new fixtures or repair and replace outdated ones by soldering and welding tubes, pipes and fittings. Sprinkler fitters also educate the public about the importance of fire prevention and using sprinkler systems, doing speaking engagements or working with community leaders. Most sprinkler fitters work for plumbing or construction companies, though some are independent contractors. 7. Foreperson Primary duties: A foreperson coordinates and supervises a crew of workers within their trade, like masonry, electricians or general contractors. They keep track of schedules, project deadlines or milestones, deliveries or supplies and ensure workers skillfully do their job. Forepeople can also work within subsets of the construction field, too, like hardscaping and landscaping on the exterior spaces of construction projects, for example. 8. Millwright Primary duties: A millwright handles the installation, maintenance and setup of industrial machinery and equipment used on construction sites.


Forepeople can also work within subsets of the construction field, too, like hardscaping and landscaping on the exterior spaces of construction projects, for example. 8. Millwright Primary duties: A millwright handles the installation, maintenance and setup of industrial machinery and equipment used on construction sites. They use specialized tools, like welders or hydraulic bolters, to align and replace the individual parts of machinery. Millwrights also handle moving machinery on- and off-site. 9. Cabinetmaker Primary duties: A cabinetmaker reads architectural blueprints and builds the woodwork, cabinetry, furniture and other ornamental design elements for a project. They work with materials like laminate, wood and fiberglass to build or repair pieces. Most cabinetmakers work for furniture manufacturers, construction companies and contractors or are self-employed. 10. Glazier Primary duties: A glazier is a construction worker who works with glass installation. From insulated glass that keeps warm or cool air to tempered glass that breaks less, glaziers install or replace windows, mirrors, skylights, storefronts, display cases or shower doors. Some glaziers also work with plastic, marble, granite and other glass substitutes used in construction. 11. Solar installer Primary duties: A solar installer, sometimes called a photovoltaic PV installer, assembles and maintains rooftops or other systems that turn sunlight into energy. They read renderings to measure, cut and bold the framing and solar modules and perform electrical current checks to ensure the system works under code and standards. 12. Sheet metal mechanic Primary duties: A sheet metal mechanic fabricates and installs thin metal sheets for various construction applications. They fasten metal seams, weld, bold and build support framework. Sheet metal mechanics often work for fabrication plants, construction companies, factories or even aircraft builders. 13. Civil engineer Primary duties: A civil engineer designs and oversees public construction and public works projects, such as airports, bridges and roads. They research potential project locations to learn about the areas, use software to design structures and present their ideas. Civil engineers often have administrative tasks, such as submitting permits, managing the project and preparing 14. Structural engineer Primary duties: A structural engineer is a specialized type of civil engineer focused on developing structures that withstand pressure, such as bridges and dams. They evaluate existing structures or plans for structures to determine how gravity and lateral loads may affect them, prepare cost estimates, submit permits and supervise construction. When necessary, structural engineers may advise on the best way to demolish structures safely.


Structural engineer Primary duties: A structural engineer is a specialized type of civil engineer focused on developing structures that withstand pressure, such as bridges and dams. They evaluate existing structures or plans for structures to determine how gravity and lateral loads may affect them, prepare cost estimates, submit permits and supervise construction. When necessary, structural engineers may advise on the best way to demolish structures safely. 15. Architect Primary duties: An architect draws plans and designs buildings, whether for new construction, redevelopment or renovation. They have high-level design and drawing skills to create safe, functional and unique designs for projects of all sizes, like housing developments, libraries, airports, government buildings, churches, shopping plazas, highways and city planning projects. Career options in ceramics include: Pottery or ceramics instructor General art teacher Ceramic artist Pottery designer Ceramic manufacturer Assistant Professor- Design Ceramics Ceramic Engineer Ceramic and Glass Designer Design Studio Assistant Model Maker Product Designer Careers in the paper industry 1. Production operator Primary duties: A production operator is a manufacturing professional who works in assembly lines to inspect and complete products. These operators assess line machine performance to troubleshoot potential issues for production efficiency. Production operators remove defective materials or products from assembly lines to ensure quality control measures. 2. Print technicianPrimary duties: A print technician manages printing equipment, programming and set up. These technicians review product specifications to calibrate printers with the correct color control or page arrangement settings. Print technicians collect printed pages for cutting, compressing, assembling and binding. 3. Screen printer Primary duties: A screen printer works with their clients to develop print designs, patterns and stencils. These professionals operate printers, mix and load ink, along with preparing materials for printing. Screen printers perform maintenance on their machines to reduce potential errors, such as inkblots, smudges or misprints. 4. Printer Primary duties: A printer manages the development of print product designs and implementation. These professionals may design books, labels or newspapers, along with deciding on printing methods to accomplish those designs. Printers supervise print orders to ensure they remain consistent with client demands. 5. Production worker Primary duties: A production worker packages completed products in the manufacturing process. These workers review products and process them on conveyor belts for final packaging. Production workers operate packing machinery, along with cleaning and maintaining them for a safe work environment. 6.


These workers review products and process them on conveyor belts for final packaging. Production workers operate packing machinery, along with cleaning and maintaining them for a safe work environment. 6. Press operator Primary duties: A press operator operates presses to produce an image or text on materials. These operators develop printing plates with their client's desired designs, along with setting up machinery to ensure that prints are successful and free of errors. Press operators clean and maintain their equipment to ensure printing accuracy. 7. Wood finisher Primary duties: A wood finisher handles chemical treatment products to achieve certain effects or looks on wood products. These finishers sand, shape and treatwood with solutions to alter their texture, color and durability. Wood finishers might spray, brush or rub finishing products to restore or seal them. 8. Print manager Primary duties: A print manager oversees printing production processes and product quality. These managers train and supervise printing personnel to maintain operational standards. Print managers review completed print products to identify errors and areas for improvement with workflow or equipment management. 9. Bindery operator Primary duties: A bindery operator is a publishing professional who operates paper binding machinery. These operators inspect and prepare binding materials to ensure accuracy. Bindery operators remove unwanted products or byproducts from machine operating areas to maintain a clean and safe work environment. 10. Framer Primary duties: A framer is a construction professional who builds or repairs wooden frames for buildings. These professionals may specialize in framing for residential, commercial or industrial buildings or for floors, roofs or walls. Framers read blueprints and communicate with contractors to determine wood materials and construction methods. 11. Sales associate Primary duties: A sales associate is a company or brand representative who provides customers with product recommendations or solutions. These associates engage customers and answer their questions to persuade them to purchase a product. Sales associates listen to customer demands to help them find the product that fits their needs. 12. Maintenance mechanic Primary duties: A maintenance mechanic programs and repairs machinery. These mechanics test and troubleshoot equipment to identify problem areas and perform repairs. Maintenance mechanics perform preventative maintenance and parts replacements to ensure machine functionality and optimization. 13. Laboratory technician Primary duties: A laboratory technician is a scientific professional who provides research and experimentation support. These technicians label, categorize and document laboratory samples, along with operating equipment to test them. Laboratory technicians enter their test results in a 14. Quality specialist Primary duties: A quality specialist tests and reviews products for defects or malfunctions. These specialists assess component qualities and functions to determine if they meet product specifications.


Laboratory technicians enter their test results in a 14.Quality specialist Primary duties: A quality specialist tests and reviews products for defects or malfunctions. These specialists assess component qualities and functions to determine if they meet product specifications. Quality specialists identify inconsistencies and develop strategies to minimize production errors for higherquality results.15.General manager Primary duties: A general manager handles the daily operations of a business, from staffing to marketing. These managers hire, train and supervise personnel to enforce business standards and safety regulations. General managers perform business evaluations to identify areas for improvement and implement goals and budgets.16.Carpenter Primary duties: A carpenter is a construction professional who installs and repairs wood structures. These professionals inspect frameworks and wood components to identify damages and develop methods to repair or improve them. Carpenters work with other construction professionals, such as installers, inspectors or roofers.


There are two main mouse types: optical and mechanical. The optical mouse uses an electronic eye to detect movement and is easier to clean. The mechanical mouse uses a rolling ball to detect movement and requires regular cleaning to work properly. Mouse alternatives There are other devices that can do the same thing as a mouse. Many people find them easier to use, and they also require less desk space than a traditional mouse. The most common mouse alternatives are below. Trackball: A trackball has a ball that can rotate freely. Instead of moving the device like a mouse, you can roll the ball with your thumb to move the pointer. Touchpad: A touchpad also called a track pad is a touchsensitive pad that lets you control the pointer by making a drawing motion with your finger. Touchpads are common on laptop computers. Assembling and disassembling computer case Part1: How to assemble a CPU step by step This part is all about CPU assembling. Specifically, you have to be very careful with this process. Following are the steps to assemble CPU: 1. Take Inventory 2. Make space and time 3. Prepare your CPU case 4. Install motherboard 5. Install the processor 6. Install the processor heat sink 7. Install the RAM 8. Install SMPS 9. Install the HDD 10. Install CD DVD drive 11. Connect Expansion cards 12. Install SYS Rear cooling fan 13. Bus cable connection 14. Power Cable connection 15. Front Panel connector connection1. Take Inventory: Before you start, take inventory of your parts. Make sure you have the following components and tools with you. 1. Case Tower Cabinet 2. Motherboard 3. Processor 4. Heat Sink and CPU Fan 5. SMPS 6. Hard disk drive 7. CD DVD drive 8. RAM 9. CMOS Battery 10. A good screwdriver sets 2. Make Space, Make Time: Building a PC takes space. You can use your dining room table to build your PC. So, make sure you have plenty of working space and a few hours to proceed with minimal interruption. You must work on a flat, stable tabletop surface or bare floor, where you have room to lay out all of the items, to begin with, assemble. 3. Prepare your CPU cabinet: Now it is time to prepare the case.


You must work on a flat, stable tabletop surface or bare floor, where you have room to lay out all of the items, to begin with, assemble. 3. Prepare your CPU cabinet: Now it is time to prepare the case. Remove the case cover from the CPU cabinet. You need to check Screw brass standoffs are perfectly placed or not. If it is not in a proper position, in that case, you need to position them accurately. Always check the manual and follow their instructions 4. Install the motherboard: Fig: motherboard and Back panel cover You must take great care, especially when installing the motherboard. First, remove the motherboard of its packaging and put it on top of the antistatic bag it came in. Remember, you always want to safeguard your components from potentially hazardous static electricity. 1. You need to secure the motherboard onto the PC case chassis and inspect carefully for any visible defects. 2. Next, review the motherboard handbook, to make sure you are familiar with the motherboard layout and understand which socket is which. Manuals are immensely helpful, usually easy to read, and include illustrations instructions. 3. Check the layout of the sockets on the motherboard. And confirm that the ports on your motherboard s back panel match the holes on the case s Input output I O shield installed in your case. If it is necessary, then remove the old I O shield bytapping it firmly a few times with the thicker end of a screwdriver. And then replace it with the shield that came with the new motherboard. 4. You need carefully position the motherboard on top of the brass standoffs. After that line up all the holes, use the screws that accompanied the case to fasten down the motherboard. 5. Don t forget to place the CMOS in the proper position. 5. Install the processor CPU : Fig: CPU placement 1. Use the unlocking mechanism to open the CPU socket which is, usually a lever. 2. Carefully line up the pins and place the chip in its socket; it will fit only when oriented correctly. An arrow or a missing pin on one corner of the chip will show you how to line things up. 3. Align with the triangular symbol with the processor and socket key marks, as shown in the Figure. 4. Lower the lever to lock the CPU into place. 6. Install the CPU heat sink: You should follow the manufacturer instructions to install the heat sink and the cooling fan.


Lower the lever to lock the CPU into place. 6. Install the CPU heat sink: You should follow the manufacturer instructions to install the heat sink and the cooling fan. If you bought an OEM CPU and a separate heat sink, then you need to spread a thin layer of the thermal grease over the chip. The thermal grease ensures proper transfer of heat. There are some heat sinks that come with this grease already applied. In that case, you don t need to use thermal grease over the chip. 1. Attach the clip that holds the heat sink in place, keeping in mind that it may require a fair amount of force. Again, follow the instructions that came with the heat sink. They will show you how to fit it correctly. If you are in doubt, you can visit the manufacturer s website for more information. 2. Plug the CPU fan s power connector into the proper connector on the motherboard. 7. Install RAM memory: Fig: Install RAM 1. Unlock the two tabs from both ends of the RAM slot. 2. To install the RAM, insert them into the proper sockets and push down firmly but evenly until the clips on both sides of the socket pop into place. If yourmotherboard supports dual-channel memory, consult the user manual to determine which pairs of RAM sockets you should use. 8. Install the Power Supply Unit SMPS : Fig: Install Power supply unit SMPS 1. Place the SMPS inside the CPU cabinet in the proper position. If you are not able to find the correct location, then check the manual. 2. Final steps, to install SMPS, you need to tighten the screw to secure the SMPS to the case. 9. To install HDD: You can see a 3.5 inch bay inside the CPU cabinet. If you are unable to find it, then check the manual of the case to identify the bay location. Place the HDD inside the bay properly and tighten the screw. Fig: Install drives 10. To install CD DVD: You can see a 5.25 inch bay inside the CPU cabinet. If you are unable to find it, check the manual of the case to identify the bay location. Place the CD DVD inside the CPU cabinet to align with the 5.25-inch bay. And, finally, you need to tighten all the screws to hold firmly. 11. Install Expansion cards: Expansion cards help to increase the functionality of your computer. You can place Expansion cards on the motherboard.


11. Install Expansion cards: Expansion cards help to increase the functionality of your computer. You can place Expansion cards on the motherboard. Fig: Install Expansion Cards PCI compatible expansion cards can place on the PCI slots of the motherboard. PCI-e compatible expansion cards can place on the PCI-e slots of the motherboard. Video cards or graphics cards can place on the AGP slot of the motherboard. You must know about various parts of a motherboard such that, you can effortlessly identify the different connectors. 12. Install Sys Rear cooling fan: Cooling FansFind the location where you can place the Sys Rear cooling Fan. Generally, SYS Rear cooling can place below the SMPS. Fig: Cooling fans 13. Bus cable connection: Amazingly, bus cable or data cable connections are prime connections. Bus cable helps to share information or data between the storage device and motherboard. Sata-pata bus and connector If your motherboard has a SATA Bus connector, then you need to use SATA cables. AND if your motherboard has a PATA Bus connector, then you can use PATA cable or IDE cable. In general, two bus cables need to connect inside the CPU. First, Bus cable connects the HDD and motherboard. And the second Bus cable connects the CD DVD drive and motherboard. 14. Power Cable connection: Fig: Cable connection This one is the final step of assembling a CPU. You need to provide power to the different parts of the CPU. Plug the ATX power connector from your power supply into the matching port on your motherboard. 1. You can find a 20 24 pins ATX power connector port on the motherboard. The 20 24 pins ATX power connector cable coming from SMPS needs to connect here. Check the lock system in both ends of the connector and the port, and place it properly. As always, refer to your motherboard s manual for the exact locations. 2. There is another 4-pins ATX power connector port, you can find on the motherboard. You can locate this port near the processor socket. You must connect the 4-pins power connector in this port properly. 15. Front Panel connector connection: Use your motherboard user manual and find the description of front-panel connectors. First, attach each of the tiny leads from the power and reset switches. After that, the hard-disk activity lights, the PC speaker, and any front-panel USB to the corresponding pin on your motherboard. Part2: How to assemble PC This one is the final part of assembling a computer system.


First, attach each of the tiny leads from the power and reset switches. After that, the hard-disk activity lights, the PC speaker, and any front-panel USB to the corresponding pin on your motherboard. Part2: How to assemble PC This one is the final part of assembling a computer system. 1. Check your keyboard connector port. If it is a USB connector, then connect your keyboard into the proper USB port. And if it is a PS 2 connector, then connect to the correct, PS 2 port. 2. Same steps you need to follow to connect your mouse into the proper port. 3. You require a VGA Video Graphic Array cable to connect the monitor and CPU. Find the 15 pins male connector on the backside of the CPU cabinet and your monitor. Use the VGA cable to connect the CPU cabinet and the monitor. Finally, you need to tighten the lock screws. 4. If you have a speaker, you can connect the speaker on the backside of your CPU cabinet. To get sound from the speaker, you need to plug the speaker s cable with the Aux port. 5. And if you have a printer, you can connect the printer on the backside of your CPU cabinet. These days, you can connect your speaker BUS cable on the USB port. Finally, connects power to the various parts of your computer. You have to connect the power cable with the CPU case, monitor, speaker, and printer. Check your PC Set-Up: It is time to turn on your system and check your PC set up. Make sure the keyboard, mouse, and monitor are all plugged into the appropriate ports on the back of the PC. Plug the power cord back in, and turn the machine on. To boot a computer you need hardware and software. Till now you have understood to assemble a computer. If you want to work on that computer you need to install an Operating System. If you do not know how to install an operating system on a computer, check the following two articles: Disassembling a PC? Disassembling a PC means disconnecting the different components of a PC. Steps for disassembling a PC Generally, people want to know both assemble and disassemble steps of a computer. Therefore I am sharing my ideas to help you to assemble and disassemble a computer system. 1. Unplugged the AC power supply to the PC from the wall socket 2. Remove the Cover or chassis or case. 3.


Unplugged the AC power supply to the PC from the wall socket 2. Remove the Cover or chassis or case. 3. Unplugged bus cables and ATX power cables 4. Remove Adapter Cards if any 5. Now Remove the processor and the heat sink and fan 6. Remove hard disk and CD DVD drives 7. Next, remove the Memory Modules 8. Remove the Power Supply SMPS 9. Finally, Remove the Motherboard1. Unplugged the AC power supply to the PC from the wall socket This one is the first step to begin a PC disassemble process. Always remember first disconnect all the power supply connected to your computer system before starting to remove parts. 2. Remove the case covering Loose the screws and remove the case covering to access the inside parts of the CPU cabinet case. 3. Unplugged bus cables and ATX power cables Disconnect all the cables one by one inside the CPU case. First, disconnect ATX power cables from the motherboard. After that, disconnect power supply cables, bus cables from the HDD SSD, and motherboard. 4. Remove adapter cards if any If any adapter is connected then, disconnect the card from the motherboard. 5. Remove the processor and the heat sink and fan Now its time to remove the heat sink from the motherboard. Generally, the CPU fan and the heat sink attach together. If it is separated in that case, you need to remove the fan first after that, you can remove the CPU heat sink. In the final step, unlock the processor socket and remove the processor from the motherboard carefully. 6. Remove hard disk and CD DVD drives Its time to remove the other parts of the computer system. Remove the Hard disk drive or SSD from the motherboard. You can also remove the CD DVD drive from the CPU case. Sometimes, to remove CD DVD drive from the CPU case, you need to remove the front cover of the CPU cabinet case first. After that, you can remove the ROM drives. 7. Remove memory modules In this process, you do remove the RAM from the motherboard. First, unlock the RAM from both ends and pull the RAM carefully. 8. Remove the Power Supply Unit PSU Already you know, SMPS supplies power to the various parts of the computer system. Here you need to remove the SMPS from the CPU cabinet case. 9. Remove the motherboard The final step of the PC disassemble process is this one.


Here you need to remove the SMPS from the CPU cabinet case. 9. Remove the motherboard The final step of the PC disassemble process is this one. Carefully remove the motherboard from the CPU cabinet case. Note: Remember, bolts or screws are the very essential things. They help to make rigid, all the parts used inside the computer. To remove any part from the computer system mostly, you need to take out bolts first. Here in PC disassemble steps, I have ignored that portion. Conclusion Assembling and disassembling a computer system is not a difficult task but requires keen observation and knowledge of the different components of thesystem. You need to be extra careful when fitting in these components and make sure that they are not fitted forcefully but firmly. In case of hardware failure or to install new add-on cards, you need to have good knowledge to assemble and disassemble a computer system Major parts of a computer case https: www.youtube.com watch?v HB4I2CgkcCo Inside a computer Have you ever looked inside a computer case, or seen pictures of the inside of one? The small parts may look complicated, but the inside of a computer case isn't really all that mysterious. This lesson will help you master some of the basic terminology and understand a bit more about what goes on inside a computer. Motherboard The motherboard is the computer's main circuit board. It's a thin plate that holds the CPU, memory, connectors for the hard drive and optical drives, expansion cards to control the video and audio, and connections to your computer's ports such as USB ports . The motherboard connects directly or indirectly to every part of the computer. CPU processor The central processing unit CPU , also called a processor, is located inside the computer case on the motherboard. It is sometimes called the brain of the computer, and its job is to carry out commands. Whenever you press a key, click the mouse, or start an application, you're sending instructions to the CPU. The CPU is usually a two-inch ceramic square with a silicon chip located inside. The chip is usually about the size of a thumbnail. The CPU fits into the motherboard's CPU socket, which is covered by the heat sink, an object that absorbs heat from the CPU. A processor's speed is measured in megahertz MHz , or millions of instructions per second; and gigahertz GHz , or billions of instructions per second. A faster processor can execute instructions more quickly.


The CPU fits into the motherboard's CPU socket, which is covered by the heat sink, an object that absorbs heat from the CPU. A processor's speed is measured in megahertz MHz , or millions of instructions per second; and gigahertz GHz , or billions of instructions per second. A faster processor can execute instructions more quickly. However, the actual speed of the computer depends on the speed of many different components not just the processor. RAM random access memory RAM is your system's short-term memory. Whenever your computer performs calculations, it temporarily stores the data in the RAM until it is needed. This short-term memory disappears when the computer is turned off. If you're working on a document, spreadsheet, or other type of file, you'll need to save it to avoid losing it. When you save a file, the data is written to the hard drive, which acts as long-term storage. RAM is measured in megabytes MB or gigabytes GB . The more RAM you have, the more things your computer can do at the same time. If you don't have enough RAM, you may notice that your computer is sluggish whenyou have several programs open. Because of this, many people add extra RAM to their computers to improve performance. Hard drive The hard drive is where your software, documents, and other files are stored. The hard drive is long-term storage, which means the data is still saved even if you turn the computer off or unplug it. When you run a program or open a file, the computer copies some of the data from the hard drive onto the RAM. When you save a file, the data is copied back to the hard drive. The faster the hard drive, the faster your computer can start up and load programs. Power supply unit The power supply unit in a computer converts the power from the wall outlet to the type of power needed by the computer. It sends power through cables to the motherboard and other components. If you decide to open the computer case and take a look, make sure to unplug the computer first. Before touching the inside of the computer, you should touch a grounded metal object or a metal part of the computer casing to discharge any static buildup. Static electricity can be transmitted through the computer circuits, which can seriously damage your machine. Expansion cards Most computers have expansion slots on the motherboard that allow you to add various types of expansion cards. These are sometimes called PCI peripheral component interconnect cards.


Static electricity can be transmitted through the computer circuits, which can seriously damage your machine. Expansion cards Most computers have expansion slots on the motherboard that allow you to add various types of expansion cards. These are sometimes called PCI peripheral component interconnect cards. You may never need to add any PCI cards because most motherboards have built-in video, sound, network, and other capabilities. However, if you want to boost the performance of your computer or update the capabilities of an older computer, you can always add one or more cards. Below are some of the most common types of expansion cards. Video card The video card is responsible for what you see on the monitor. Most computers have a GPU graphics processing unit built into the motherboard instead of having a separate video card. If you like playing graphics-intensive games, you can add a faster video card to one of the expansion slots to get better performance. Sound card The sound card also called an audio card is responsible for what you hear in the speakers or headphones. Most motherboards have integrated sound, but you can upgrade to a dedicated sound card for higher-quality sound. Network card The network card allows your computer to communicate over a network and access the Internet. It can either connect with an Ethernet cable or through a wireless connection often called Wi-Fi . Many motherboards have built-in network connections, and a network card can also be added to an expansion slot. Bluetooth card or adapter Bluetooth is a technology for wireless communication over short distances. It's often used in computers to communicate with wireless keyboards, mice, and printers. It's commonly built into the motherboard or included in a wireless network card. For computers that don't have Bluetooth, you can purchase a USB adapter, often called a dongleTHE MOTHERBOARD Power supplyfor CPUfan24pins ATMountingPete xt PetesMotherboard Definition of the Motherboard A motherboard is the main circuit board inside a computer that connects the different parts of a computer together. It has sockets for the CPU, RAM and expansion cards and it also hooks up to hard drives, disc drives and front panel ports with cables and wires. Motherboard is also known as a mainboard, planar board or logic board, system board, mobo or MB. It links all the individual parts of a computer together and also, allows the CPU to access and control these separate parts. Other than bridging internal components, the motherboard ports also allows you to connect external devices to the computer.


Motherboard is also known as a mainboard, planar board or logic board, system board, mobo or MB. It links all the individual parts of a computer together and also, allows the CPU to access and control these separate parts. Other than bridging internal components, the motherboard ports also allows you to connect external devices to the computer. Such external devices would include the monitor, speakers, headphones, microphone, keyboard, mouse, modem and other USB devices. Functions of the Motherboard The functions of a computer motherboard are as follows: i. The motherboard acts as the central backbone of a computer on which other modular parts are installed such as the CPU, RAM and hard disks. Ii. The motherboard also acts as the platform on which various expansion slots are available to install other devices interfaces. Iii. The motherboard is also responsible to distribute power to the various components of the computer. Iv. They are also used in the coordination of the various devices in the computer and maintain an interface among them. V. Some of the Sizes in which the motherboards are available are : BTX, ATX, mini-ATX, micro-ATX, LPX, NLX etc.. Types of Motherboards A computer s motherboard is typically the largest printed circuit board in a machine s chassis. It distributes electricity and facilitates communication between and to the central processing unit CPU , random access memory RAM , and any other component of the computer s hardware. There is a broad range of motherboards, each of which is intended to be compatible with a specific model and size of the computer. To comprehend what motherboards are and what they do, we must first examine their various types and specifications. 1. Advanced Technology AT motherboard Due to their larger physical dimensions which can be measured in hundredths of millimeters , these motherboards do not work properly with computers that fall into the category of smaller desktops. A larger physical size makes it more difficult to install new hardware drivers. The power connections on these motherboards are in the form of sockets and plugs with six prongs each. Due to the difficulty in recognizing these power connections, users often have issues while trying to connect and operate them. In the 1980s, motherboards of this sort were all the rage, and they continued to be manufactured far into the 2000s. 2. Standard ATX motherboard ATX is an enhanced version of the AT motherboard that Intel created in the 1990s.


In the 1980s, motherboards of this sort were all the rage, and they continued to be manufactured far into the 2000s. 2. Standard ATX motherboard ATX is an enhanced version of the AT motherboard that Intel created in the 1990s. Its name means advanced technology extended, and its initials stand for advanced technology. Unlike AT, it is much more compact and enables the associated components to be interchanged. The connection elements have witnessed significant progress and development. 3. Micro ATX motherboardThe length and width of these motherboards, measured in millimeters, are also 244 mm size metrics will differ as per the manufacturer . This motherboard has fewer ports and slots than the Standard ATX board. Users who do not want excessive connections and subsequent upgrades, like adding more RAM, an extra GPU, or other Peripheral Component Interconnect PCI cards, are better suited for this kind of motherboard than others. This motherboard may be installed in any case with enough space to accommodate 244 mm by 244 mm. It can also be installed in larger cases that are compatible with Standard ATX or eXTENDED ATX motherboards. 4. Extended ATX motherboard The dimensions of this motherboard are 344 millimeters by 330 millimeters dimensions will differ with different manufacturers . This motherboard supports a single or a twin CPU configuration and has up to eight RAM slots. Additionally, it has a higher number of PCIe where e is for Express and PCI slots, which may be used to add PCI cards for a wide range of applications. Workstations and servers are both able to use this software. There is sufficient room on all eATX motherboards, making them ideal for desktop computers, thanks to the significant space provided for airflow and the attachment of various components. 5. Flex ATX motherboard These ATX Form Factor mainboards do not enjoy the same degree of popularity as their ATX Form Factor counterparts. They are the ones within the ATX family that are considered the most compact. They were designed to occupy a minimal amount of space and had a minimal price tag. Flex ATX is a modification of mini ATX that Intel created between 1999-2000. It is a motherboard standard. 6. Low-Profile EXtended LPX motherboardIn comparison to previous iterations, this has two significant enhancements.


4. RAM memory RAM slots connect the random access memory RAM to the motherboard. RAM allows the computer to temporarily store files and programs that are being accessed by the CPU. Computers with more RAM capacity can hold and process larger files and programs, thus enhancing performance. However, RAM contents are erased when the computer is shut down. A computer usually has two RAM slots. However, some computers have up to four RAM slots in the motherboard to increase the available memory. 5. Basic input output BIOS system The BIOS contains the firmware of the motherboard. It consists of instructions about what to do when the computer is turned on. It is responsible for initializing the hardware components and loading the computer s operating system. The BIOS also allows the computer s operating system to interact and respond with input and output devices such as a mouse and keyboard. In some motherboards, the legacy BIOS is replaced by the modern extensible firmware interface EFI or the unified extensible firmware interface UEFI . UEFI and EFI allow the computer to boot faster, provide more diagnostic andrepair tools, and provide a more efficient interface between the operating system and computer components. 6. Chipsets The chipsets of a computer control how the computer hardware and buses interact with the CPU and other components. Chipsets also determine the amount of memory users can add to a motherboard and the type of connectors that the motherboard can have. The first type of chipset is the northbridge chipset. The northbridge manages the speed at which the CPU communicates with the components. It also controls the processor, the AGP video slot, and the RAM. The second type of chipset is the southbridge chipset. The southbridge chipset controls the rest of the components connected to the computer, including communication between the processor and expansion ports such as USB ports and sound cards. 7. Cooling fans The heat generated when electric current flows between components can make a computer run slowly. If too much heat is left to build up unchecked, it could damage computer components. Thus, a computer performs better when kept cool. Cooling fans increase the airflow, which helps to remove heat from the computer. Some elements, such as video adapter cards, have dedicated cooling fans. 8. Adapter cards and expansion slots Adapter cards are integrated into the motherboard to enhance a computer s functionality. Examples include sound and video adapters. The expansion slots allow users to install compatible adapter cards.


Adapter cards and expansion slots Adapter cards are integrated into the motherboard to enhance a computer s functionality. Examples include sound and video adapters. The expansion slots allow users to install compatible adapter cards. Examples of expansion slots include the peripheral component interconnect PCI slot, the AGP slot which enables the insertion of video cards , the PCI Express serial bus slot, and the PCI-extended slot. 9. CMOS batteryThe CMOS battery is a small round battery found on the motherboard of every computer. It provides power to the complementary metal oxide semiconductor CMOS chip. The CMOS chip stores BIOS information and computer settings, even when powered down. The CMOS battery allows users to skip resetting BIOS configurations, such as boot order, date, and time settings, each time they power on their computer. 10. Storage devices Storage drives store data permanently or retrieve data from a media disk. The storage devices can either be installed in the computer as hard drives or in removable drives that can connect to the computer through the USB ports. Hard disk drives HDD or solid-state drives SSD are computers primary storage drives. Computers with SSDs execute tasks much faster and perform better than HDDs. Users can also use optical drives such as compact discs to store information. 11. Front panel connectors Front panel connectors connect the light-emitting diode LED lights on the front of the case to the hard drive, the power button, the reset button, and the internal speaker for testing. Some USB and audio devices also have LED lights. These front panel connectors are usually plugged into small pins on the motherboard. Although the pins are grouped and color-coded, their layout structure varies depending on the model of the motherboard. 12. Power connector The power connector provides an electric supply to the computer to function as intended. The power supply connector has 20 pins and converts 110-V AC power into -12-Volt, -5-Volt, and 3.3-Volt direct current DC power. Functions of a Motherboard The following are seven functions of a motherboard:1. Manages data flow The BIOS component of the motherboard ensures that the operating system interacts well with input and output devices, such as the keyboard and mouse, to process instructions. This ensures that the data sent to the computer moves as expected to perform the intended purpose. It also manages data flow through its USB ports, allowing for data transfer between devices. Additionally, it ensures the processor can access information from the RAM to boost efficiency. 2.


It also manages data flow through its USB ports, allowing for data transfer between devices. Additionally, it ensures the processor can access information from the RAM to boost efficiency. 2. Conserves resources The motherboard saves consumers time, energy, and money by connecting all the computer connects. The motherboard provides a platform on which manufacturers can connect all the necessary components to ensure that the computer functions. Thus, saving consumers time and energy as they do not have to assemble and connect different parts manually. Moreover, collecting the individual components can prove costly as consumers would be forced to incur additional transport and other miscellaneous costs. 3. Optimizes power distribution The motherboard provides and distributes power optimally. Computers require electricity to function. The motherboard has a power connector plugthat connects the computer to a power source and converts it into a form of electrical power that the computer can use. After that, the motherboard ensures that the electric current is distributed optimally to different system components. The motherboard has an integrated circuit technology with pre-defined connections that ensure each element gets the necessary power. Moreover, the circuits ensure less energy is consumed to make the computer an energyefficient machine. 4. Drives communication The motherboard makes communication between different components easier. For a computer to process a particular set of instructions, sometimes it may require several components to communicate and work together to complete the task. In such scenarios, the motherboard relies on its circuit technology to enable communication between these components. The motherboard may also depend on some of its components, such as the CPU, BIOS, expansion ports, and USB ports, to interact with the computer s operating system. 5. Enhances performance The motherboard boosts the capabilities of a computer. Motherboards often transform the capabilities of a computer. For instance, they have additional features and functionalities, such as built-in sound and video capabilities that can enhance the computer s output. Motherboards also allow users to connect peripheral devices such as printers, enabling computers to perform additional tasks such as printing documents. Additionally, users can expand and upgrade factory-made motherboard parts such as memory slots or hard disks to boost the capabilities of their computers. 6. Improves reliability A good motherboard boosts the overall reliability of the computer. A highquality motherboard provides a stable foundation for its components to operate on. A good motherboard has proper cooling, and its integrated circuit technology is set in place. These factors enable it to control the computer s hardware efficiently by ensuring that each element functions as expected andcommunicates with the other components.


Data bus 3. Control bus The buses connect the CPU microprocessor to each of the memory and I O devices. The CPU is involved in sending or receiving information to or from memory location, input or output device, and a secondary memory device FDD or HDD . When the CPU sends data to a device or memory, it is called WRITE operation and when the CPU receives data it is called READ operation. The functions of buses are described now. Address Bus The address bus is unidirectional, information flows over it only in one direction, from the CPU to the memory or I O devices. The CPU generates addresses on the lines of the address bus. Each of the addresses corresponds to one memory location or one I O device. When the CPU wants to communicate with READ or WRITE , a certain memory location or I O device, it places the appropriate address on its address output. This address is then decoded to select the desired memory location or I O device. This decoding process usually requires address decoder circuits. Microprocessor local buses Data Bus The data bus is bidirectional and data can flow to the CPU through it. The data bus can be either input or output depending on whether the CPU performs a READ or a WRITE operation. During READ operation the data bus receives data that has been placed on the data bus by memory or I O device selected by the address. During WRITE operation the data bus acts as the output and places data on the data bus which are sent to a selected memory location or I O device. Control Bus The control bus consists of a set of signals that are used to synchronize the activities of separate microcomputer elements. Some of these control signals are sent by the CPU to the other components to tell them the type of operation in progress. The I O devices can send control signals to the CPU. Read Write, Rest, and interrupt are examples of control signals used in a microcomputer. Other busesCOMPUTER MONITOR OR VIDEO DISPLAY UNIT TYPES, AND FEATURES VDU 1. Short for visual display unit, VDU is an any device used with computers to display text and images. For example, a flat-panel display and a projector are both examples of VDUs. However, VDU most commonly describes the CRT cathode ray tube monitor, a now archaic standard replaced by flat-panel display methods like LED lightemitting diode . Early VDUs had a 13" screen size.


For example, a flat-panel display and a projector are both examples of VDUs. However, VDU most commonly describes the CRT cathode ray tube monitor, a now archaic standard replaced by flat-panel display methods like LED lightemitting diode . Early VDUs had a 13" screen size. By the mid-1990s, 15" and 17" VDU screen sizes became more common, with some 20" screen sizes being released. By the early 2000s, flat-panel monitors with 15" and 17" screen sizes gained popularity and started replacing CRT monitors. 2. Short for video display unit, VDU is a computing device that allows input from a user and output to a display, like a computer monitor. A VDU consists of a display device and a keyboard and could include a mouse. In the United States, it is sometimes known as a video display terminal or VDT video display terminal . Please note The computer monitor is an output device that is used to display softcopy data that is processed on the system unit. A computer monitor is also known as a screen or Visual Display Unit VDU . Some types of computer monitors are CRT, LCD, TFT, Plasma, OLED, LED, touch screen, and curved screens. To acquire a new computer screen, some of the features to consider are resolution, size, technology, refresh rate, video connector, aspect ratio, and viewing angle among other factors. Types of Computer monitors Computer monitors have evolved from the bulky big Cathode Ray Tube monitor to the ultra-slim curved screen that we have today. Some of the computer monitor types that you will find in the market include: 1. Cathode Ray Tube CRT . These are the oldest types of computer monitors and they used the technology of cathode rays. On the back of the screen, there is a cathode gun that shot rays through a vacuum into the screen. The screen has an anode and material that glows when hit by the electrons. The rays hit the glowing material and the image is created appropriately. The monitor had a long back side because the front and cathode gun had to be at a distance for it to give the best results. 2. Liquid Crystal Display LCD . They used the crystal liquid which is easy to be manipulated and changed when light strikes it. Compared to CRT they are lightweight, slimmer, and use less power. 3.


They used the crystal liquid which is easy to be manipulated and changed when light strikes it. Compared to CRT they are lightweight, slimmer, and use less power. 3. Light emitting diode LED It uses the light-emitting diode as the backlight which makes it slim because it doesn t need the distance that is required in CRT. They produce images with high resolution, are slimmer, less bulky, and produce less heat and less power. 4. Organic Light Emitting Diode OLED It is the latest technology an improvement from LED but still very expensive to produce in bulky. It has an organic substrate that glows when electricity is passed through it. They use less power and they are even slimmer because they don t need backlight since the substrate can produce light. 5. Touchscreens monitors Currently, computer screens are manufactured to take instruction from the human touch. An operating system such as Microsoft Windows 8 and above versions was developed to support a touch screen operation. There are 4 main technologies used for touch screens. A. Capacitive touch screen These screens use the capacitor concept which stores charge. Since the human body has electrical charges when you touch the screen at a specific position you discharge that particular point. The information is then sent to the processor which interprets what needs to be done. They are mostly used on smartphones in today s applications. B. Resistive touch screen The resistive screen uses the concept of resistors where it has two layers with a gap between them. For it to be effective the user has to press and not just touch because the two layers must make contact at the point where it has been pressed. When it is pressed the point can be identified and interpreted appropriately. These touch screens can be touched with a finger and any other objectthat can exact pressure and not a must that it has electrical changes. C. Infrared touch monitors They have an infrared emitter and receiver which create an invisible grid of rays. When you touch the screen you disrupt the ray transmission which is then recorded as a touch. D. Surface acoustic wave monitor These touch screens use sound waves to detect the touch. They have transducers and receivers on the opposite corners of the screen. When you touch the screen you disrupt the sound wave which is sensed as a touch command. 6. Plasma display panel They are flat-panel types of screens made up of small cells containing plasma. Plasma contains charged particles ions and electrons .


6. Plasma display panel They are flat-panel types of screens made up of small cells containing plasma. Plasma contains charged particles ions and electrons . When electricity is passed through them they emit light which forms an image. They are not common computer screens because they are more economical for big-size screens. 7. Curved computer monitor These are replacing flat screen monitors by offering a curved viewing screen. They offer a better viewing angle compared to a flat screen Factors to consider when choosing a good computer monitor1. Resolution: It is the number of pixels that can be displayed per inch of the screen. The higher the number the more clear the image that is displayed. 3. Aspect ratio: It is the ratio of the length horizontal and width vertical of the monitor. It determines how the image will be stretched on the screen. The main ratios are 4:3 and 16:10. 4. Viewing angle: It is the angle where you can view the image without distortion. CRT screens had a wide viewing angle than LCD screens. 5. Power consumption: LCD uses the least power compared to CRT and OLED type of technology. Less power means power is conserved and also it reduces overheating. 6. Technology: screen comes from different technology modes as discussed in different types above. The technology will determine the image quality, cost, and user preference. 7. Connector video input: latest video connector for monitors is HDMI. However, to be on the safe side you should have a computer screen that supports more than one way of connecting. If you are buying a screen for an already existing system unit make sure you check which is a compatible type of supported connection. 8. Ergonomics: most users spend more time on the screen and would like to get a screen design for comfort. Select a screen that has height adjustability, and can change screen brightness and contrast among other designs. 9. Refresh rate: this is the rate at which the screen can refresh the displayed image per second. A higher refresh rate means the image will be clear and it will not look like it hangs. It is measured in hertz and the higher the better. Most computer screens have 144Hz. 10. Contrast and brightness: contrast ratio is how dark the black part is and how bright the white parts of an image can get. While brightness is the measure of light that the screen can produce. 11. Built-in speakers: latest monitor come with an inbuilt speaker that can be used to complement the system unit speakers.


While brightness is the measure of light that the screen can produce. 11. Built-in speakers: latest monitor come with an inbuilt speaker that can be used to complement the system unit speakers. 12. USB port: USB port is a common connector interface in today s devices including screens. They can be used to load data without even connecting to the system unit. For future improvement and use, you can select a monitor that has a USB port. Types of computer screen connectors Every computer offers a connection port that allows the computer monitor to be connected to the system unit so that it can receive data being transmitted. Most monitors are connected using a VGA cable. The cable connects the VGA card which translates the information from the system unit into images and text that the user can be able to view. Other screen connectors are AUX, HDMI, DVI, and Display Port. Structure of Visual Display Unit The structure of a Visual Display Unit VDU can vary depending on the specific type of device, but most VDUs have several key components in common. Here is a general overview of the structure of a VDU:1. Display panel: This is the part of the VDU that actually displays the visual information. It is typically made of a thin layer of crystal or plastic, and can display images using a variety of technologies, such as liquid crystal display LCD or organic light-emitting diode OLED . 2. Backlight: Many VDUs, especially those used in portable devices, use a backlight to illuminate the display panel. This helps to make the images on the screen more visible in low light conditions. 3. Circuitry: The VDU contains a number of electronic circuits that control the display panel, the backlight, and other components of the device. 4. Housing: The VDU is typically enclosed in a housing or casing that protects the internal components and provides a way to mount the device. 5. Input output I O ports: The VDU may have one or more I O ports that allow it to receive data or signals from other devices, such as a computer or a cable TV box. 6. Power supply: Most VDUs require a source of power, which may be supplied through a power cord or a built-in battery. Functions of Visual Display Unit Some specific functions of a VDU include: 1. Displaying text and graphics: VDUs use a screen to display text and graphics, which can include text documents, spreadsheets, websites, and more. 2.


Functions of Visual Display Unit Some specific functions of a VDU include: 1. Displaying text and graphics: VDUs use a screen to display text and graphics, which can include text documents, spreadsheets, websites, and more. 2. Providing a visual interface: VDUs allow users to interact with a computer or other device by providing a visual interface through which users can see and understand the information being processed and input commands and data. 3. Allowing for multitasking: VDUs allow users to work on multiple tasks at the same time by displaying multiple windows or programs on the screen. 4. Supporting high-resolution displays: Some VDUs support highresolution displays, which can provide a more detailed and accurate representation of the information being displayed. 5. Providing connectivity: VDUs may have connectivity options, such as HDMI or DisplayPort, which allow users to connect the VDU to other devices, such as a computer or a television. Uses of Visual Display Unit Visual Display Units VDUs , also known as computer monitors, are used in a wide range of applications. Some common uses of VDUs include: 1. Office work: VDUs are commonly used in office environments to display text documents, spreadsheets, and other business-related information. 2. Education: VDUs are used in classrooms and educational settings to display educational materials and videos, and to allow students to interact with educational software. 3. Entertainment: VDUs are used to display movies, television shows, and video games, and they can also be used to access streaming services like Netflix or Hulu. 4. Gaming: VDUs are often used in conjunction with gaming consoles or PC gaming systems to display video games. 5. Design and graphics: VDUs are used by designers and graphic artists to create and edit graphics and other visual content. 6. Medical and scientific research: VDUs are used in medical and scientific research to display data and images, such as MRI scans or microscopy images. 7. Military and aviation: VDUs are used in military and aviation applications to display maps, navigation information, and other data. 8. Industrial and manufacturing: VDUs are used in industrial and manufacturing settings to display production data, machine status, and other information. Benefits of Visual Display Unit Visual Display Units VDUs , also known as computer monitors, offer a number of benefits, including: 1.


8. Industrial and manufacturing: VDUs are used in industrial and manufacturing settings to display production data, machine status, and other information. Benefits of Visual Display Unit Visual Display Units VDUs , also known as computer monitors, offer a number of benefits, including: 1. Improved productivity: VDUs allow users to work more efficiently by providing a clear and easy-to-read display of text and graphics. 2. Multitasking: VDUs allow users to work on multiple tasks at the same time by displaying multiple windows or programs on the screen. 3. High-resolution displays: Some VDUs support high-resolution displays, which can provide a more detailed and accurate representation of the information being displayed. 4. Connectivity: VDUs may have connectivity options, such as HDMI or Display Port, which allow users to connect the VDU to other devices, such as a computer or a television. 5. Easy to use: VDUs are generally easy to use, with simple controls and an intuitive interface. 6. Energy efficient: Many modern VDUs are energy efficient, which can help reduce electricity consumption and reduce the environmental impact of using a computer. 7. Customization: VDUs can be customized to meet the specific needs of the user, such as adjusting the display settings to reduce eye strain or to optimize the display for specific tasks. 8. Access to information: VDUs allow users to access a vast amount of information and data that is stored on computers, which can be useful for research, education, and more. Limitations of Visual Display Units VDUs Visual Display Units VDUs , also known as computer monitors, have a few limitations, including: 1. Limited viewing angles: Some VDUs have limited viewing angles, which means that the display may appear distorted or washed out if viewed from certain angles. 2. Limited display size: The size of a VDU is limited by the size of the screen, which may not be large enough to display certain types of information or graphics. 3. Limited color depth: Some VDUs may not support a wide range of colors, which can impact the accuracy and quality of the display. 4. Limited refresh rate: The refresh rate of a VDU refers to how often the display is updated, and a lower refresh rate can result in a less smooth and responsive display. 5.


4. Limited refresh rate: The refresh rate of a VDU refers to how often the display is updated, and a lower refresh rate can result in a less smooth and responsive display. 5. Limited resolution: The resolution of a VDU refers to the number of pixels on the screen, and a lower resolution can result in a less detailed and accurate display. 6. Limited lifespan: Like all electronic devices, VDUs have a limited lifespan and may need to be replaced after a certain period of time. 7. Cost: VDUs can be expensive, particularly high-end models with advanced features. 8. Environmental impact: The production and disposal of VDUs can have an impact on the environment, as they contain materials and chemicals that can be harmful if not properly managed. Hazards of Visual Display Unit There are a few potential hazards associated with using Visual Display Units VDUs , also known as computer monitors, including: 1. Eye strain: Prolonged use of a VDU can cause eye strain, which can cause symptoms such as dry eyes, blurred vision, and headache. 2. Repetitive strain injury: Repetitive actions, such as typing or using a mouse, can cause repetitive strain injuries, such as carpal tunnel syndrome. 3. Back pain: Poor posture while using a VDU can cause back pain, particularly if the workstation is not set up correctly. 4. Electromagnetic fields: Some VDUs emit electromagnetic fields, which have been linked to an increased risk of cancer and other health problems. However, the risks associated with electromagnetic fields from VDUs are generally considered to be low. EXAMPLES OF VDULCD vs LED Displays: The Differences When it comes to choosing between LCD and LED displays, the decision can often be confusing. At first glance, they may seem identical, but there are key differences in their construction, performance, and energy efficiency. In simple terms, LED displays are a type of LCD with a unique backlighting system, and they tend to offer better image quality and power efficiency than standard LCDs. LCD Displays LCD, which stands for Liquid Crystal Display, utilizes a panel of liquid crystal molecules to create images. These molecules twist and untwist to control the amount of light passing through them. However, they do not produce light on their own. Instead, they use a separate backlight or reflector to illuminate the liquid crystals. The backlight in traditional LCD panels is often a Cold Cathode Fluorescent Lamp CCFL .


However, they do not produce light on their own. Instead, they use a separate backlight or reflector to illuminate the liquid crystals. The backlight in traditional LCD panels is often a Cold Cathode Fluorescent Lamp CCFL . While these displays offer good image quality, they have some limitations. Generally, they consume more power and are bulkier than their LED counterparts. Moreover, they may not provide as high contrast or as vibrant colors. LED Displays LED, or Light Emitting Diode displays, are essentially a type of LCD display. The key difference lies in the backlighting system. Instead of using CCFL, LEDdisplays use tiny light-emitting diodes to illuminate the liquid crystals. This change in lighting source opens up a range of benefits. Firstly, LED displays are more energy efficient. LEDs consume less power than CCFL, making them a greener choice. Secondly, they allow for a slimmer and lighter design, making them ideal for modern, sleek devices. One of the critical advantages of LED displays is the potential for greater picture quality. In LED displays, the diodes can be dimmed or brightened individually. This feature, known as local dimming, enhances the contrast ratio, making blacks appear deeper and whites brighter. Consequently, images are more vibrant and lifelike. PRINTERS Different Types of Printers and Their Functions: What Are the Types of Printers? Thermal Transfer Printers Thermal printers use heat to create an image on special thermal paper. They provide direct thermal and thermal transfer, and they re commonly used in receipt printers, shipping label printers, and fax machines. Additionally, they re fast, quiet, and don t require ink or toner. However, the print quality of a thermal printer may fade, and the paper can be expensive. Dye-Sublimation PrintersDye-sublimation printers use heat to transfer dye onto special paper or other materials like fabric or plastic. They re popular for high-quality photo printing and creating customized items like mugs and T-shirts. Additionally, they produce vibrant, long-lasting prints with excellent color accuracy, but the cost of consumables ink and paper can be relatively high. And they re not ideal for standard office documents. 3D Printers 3D printers create three-dimensional objects by layering material often plastic on top of itself based on a digital 3D model.


The best part? UV printing offers vibrant colors and durability on various surfaces. However, initial equipment costs can be high, and maintenance may be needed to keep the printer functioning optimally. Digital Presses Digital presses make a great choice for commercial printing and publishing. They re high-volume printing machines suitable for large quantities of books, brochures, and other printed materials. They offer fast, consistent, high-quality printing for large print runs. However, they re expensive and may require specialized training to operate effectively. In summary, there s a wide array of printers, each designed for specific purposes and printing needs. Choosing the right printer depends on the type of documents or images you need to print, the printing volume, and your budget. Consider your requirements carefully to select the printer that best suits your needs, whether for everyday home use, office tasks, creative projects, or industrial applications. Other Types of Printers 9. Plotters HP 9862A Calculator Plotter Example: HP Design Jet T210 A plotter prints vector graphics by drawing lines on paper using a pen. Some plotters use markers to draw multiple, continuous lines onto paper, while some use knives to cut a material like leather or vinyl. The latter is called cutting plotters. These devices have been phased out by computer-controlled printing machines. However, cutting plotters are still used in many industries. Pros Prints on large sheets of paper with high resolution Draws a single pattern more than one thousand times with no degradation Works with various materials, including cardboard, plywood, plastic, and aluminum Cons Expensive and larger than a conventional printer 8. Impact Printers The impact printer physically presses an inked ribbon against the page. Its plastic or metal head strikes the ink ribbon, whereby the ribbon is pressed against the page, and the specific character impression is printed on the paper. Although this mechanism is quite old, impact printers are still widely used in workplaces and industries. Many different types of impact printers have been developed to date. The most common ones are:8.1 Line Printers IBM 1403 line printer Example: Printronix P7-1500N line matrix printer As the name suggests, Line printers print one line of text at a time the full width of the page . They use a continuous feed of paper instead of individual cut sheets. And they can print up to 2,500 lines per minute.