Step-by-step explanation:
CPU stands for Central Processing Unit.
There are three parts of a computer system. One is Central Processing Unit, one is Monitor or the Display Device, and the third is Keyboard. These three main units combine to make a Computer system.
Central Processing Unit is the main part of the computer system. It is the hardware part which contains a lot of wires, ports, chips, routers, memories, storage devices, etc. It contains memories which have predefined programs stored in it. This part of the computer system is responsible for doing the logical, arithmetical, input and output functions of the computer system. In simple words, it the place where all calculations and processing is taking place.