When looking specifically at how a computer works. Majority of the Brain is the processor.

It easy to forget how much with a volume of a laptop is main a processor. How integral this small part is to the functions needed from the use of a laptop. Also the processor need sister parts for full run and know.

List of Generally needed part to run a computer: Power Supply/PSU MotherBoard/Mainboard Processor/CPU RAm Storage Keyboard/Mouse Monitor

Other Option Parts: Optical Drive Graphics Cards/GPU Sound Card

The Motherboard My even be broken down to subparts that are nesccary to its running. Other types can me considered are the SOC (system on a chip) which condense the volume and about of different item needed that go on a the mainboard.