On this page is a glossary of terms used this site and in the computer world in general.
ATX is a form factor of a PC, the motherboard, case, PSU all need to be in the same form factor to be able to fit together.
A communication system that transfers data between computer components.
The CPU or central processing unit is the brain of the computer and is installed on the motherboard in a socket.
The standard in which PC components fit together, form factors are Standard ATX, Micro ATX, Mini ATX, and Nano ATX.
Power supply unit, converts mains AC to regulated DC, used to power the internal components of a PC.