Hard disk drive - A device used to store large amounts of data., Motherboard - The circuit board inside a computer that houses the CPU, memory and connections to other devices., Bus - The wires through which data travels from one part of a computer to another on the motherboard., Random Access Memory - This is volatile memory that is constantly being written to and read from. It does not retain its contents without a constant supply of power. When a computer is turned off, everything stored in its RAM is lost., Central Processing unit - Also known as the CPU, the part of the computer that processes program instructions., Heat sink - A component used on computer motherboards to cool the CPU., Power Supply - This converts the alternating current (AC) from a wall socket of mains electricity to a low-voltage direct current (DC) to operate the motherboard, processor and peripheral devices., Mouse - This input device controls a cursor for pointing, moving and selecting text, icons, files, and folders on your computer., Speaker - This device outputs sound from your computer.,

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