storage and processing
main peices of the inside of a computer
There is a graphics card, CPU, ram, power supply, fan unit, sound card and hard disk drive.
The mother board
The motherboard is the main circuit board of a computer. Everything links to it as thought it is a centre piece of an art collection. the main parts it contains are a battery, CPU, ram, keyboard connecter, AGP slots, PCI slots, ISA slots, expansion board and L2 cache. It also contains lots of tiny circuits to make your computer work.
CPU is also phrased as the brain of a computer, it is an extremely important part of the computer system and is usually just one tiny chip. It isn't as complicated as a literal human brain though.