A typical personal computer consists of a case or chassis in a tower shape (desktop) and the following parts:
- Motherboard - It is the "body" or mainframe of the computer, through which all other components interface.
- Central processing unit (CPU) - Performs most of the calculations which enable a computer to function, sometimes referred to as the "backbone or brain" of the computer.
- Firmware is loaded from the Read only memory eg. ROM run from the Basic Input-Output System (BIOS) or in newer systems Extensible Firmware Interface (EFI) compliant
- Internal Buses - Connections to various internal components.
- External Bus Controllers - used to connect to external peripherals, such as printers and input devices. These ports may also be based upon expansion cards, attached to the internal buses.
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These supplies are needed for the job.
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