Computer Parts

Computer Case

The metal and plastic case that houses the main system components of the computer.

Expansion Card

A circuit board inserted into a slot on the motherboard to enhance the capability of the computer.

Hard Drive

A primary storage component of a computer which holds all software and data.

Power Supply

Converts AC power from the wall outlet into the lower voltages of DC power required to power all components of the computer.


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


Central Processing Unit; the brain of computer.

Heatsink and Fan

Standard method to keep CPU cool.

Memory (RAM)

Form of computer data storage. Random access memory.