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Because computer parts contain hazardous materials, there is a growing movement to recycle old and outdated parts. [66] Computer hardware contain dangerous chemicals such as lead, mercury, nickel, and cadmium. According to the EPA these e-wastes have a harmful effect on the environment unless they are disposed of properly.
Circuit diagrams are pictures with symbols that have differed from country to country and have changed over time, but are now to a large extent internationally standardized. Simple components often had symbols intended to represent some feature of the physical construction of the device.
By the late 1990s, many personal computer motherboards included consumer-grade embedded audio, video, storage, and networking functions without the need for any expansion cards at all; higher-end systems for 3D gaming and computer graphics typically retained only the graphics card as a separate component. Business PCs, workstations, and servers ...
A computer case, also known as a computer chassis, is the enclosure that contains most of the hardware of a personal computer. The components housed inside the case (such as the CPU, motherboard, memory, mass storage devices, power supply unit and various expansion cards) are referred as the internal hardware, while hardware outside the case ...
Standby power allows a computer to be started remotely via wake-on-LAN and Wake-on-ring or locally via Keyboard Power ON (KBPO) if the motherboard supports it. This standby voltage may be generated by a small linear power supply inside the unit or a switching power supply, sharing some components with the main unit to save cost and energy.
IB/Group 4/Computer Science/Resource Management; A-level Computing/AQA/Computer Components, The Stored Program Concept and the Internet; A-level Computing/AQA/Paper 2/Fundamentals of computer systems/Relationship between hardware and software; A-level Computing/AQA/Print version/Unit 2; A-level Computing/AQA/Paper 2; Template:CPTNavigationP2
It has a monitor, keyboard, mouse, speakers, and a computer tower. The computer tower contains the motherboard and processor. A desktop computer, often abbreviated as desktop, [1] is a personal computer designed for regular use at a stationary location on or near a desk (as opposed to a portable computer) due to its
3.1 Computer components. 4 Computer performance. 5 Computing. 6 Computer science. 7 History of computers. 8 Computers and culture. 9 Computer industry. Toggle ...
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