Why do computers have different parts
Its good that all the parts are separate because if you break something then you can possible fix it and get new parts for your computer.But replacing parts for your computer doesn't come cheap.
Whats inside the computer
Why are all the parts needed in a computer
For example take the fan inside your computer it has electricity moving through it all the time and gets very hot. Your computer’s components are very sensitive to temperature, and if things get too hot in your computer case, it will start to overheat and shut down. Thats why you need the fan to help it cool down.