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Central Processing Unit, the brains of the computer.


To prepare a disk so that data and programs can be stored on it.


A circuit board that contains all of the computer system's main components.

memory chip

The part of the CPU that holds memory.

expansion board

A circuit board used to connect a device to a computer's motherboard.

storage device

Hardware that allows you to store information, such as a hard drive or a flash drive.


The physical equipment of a computer system that you can touch.


The computer screen.


Computer add-ons like printers, mice, keyboards, etc.


outlet in a computer where other equipment can be plugged in.


a device that connects multiple computers on a network.


hardware or software that prevents outside users from accessing a computer.

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