What is CPU, Control Unit and ALU?
CPU stands for Central Processing Unit. It is the most important component of the computer. It is also known as processor. CPU is considered as the brain of the computer. CPU performs all operations on data according to program's instructions. It executes the program instructions and tells other parts of the computer what to do.
Control unit is the most important part of CPU. It acts as supervisor of the computer. It controls all parts of the computer and coordinates all activities in the computer.
List some activities of control unit.
The control unit controls the execution of instructions given to the computer. It fetches the. instructions and data from the memory unit. It decodes and executes the instructions one by one.
Purpose of ALU:
ALU stands for Arithmetic and Logic Unit. It is another important component of CPU, It performs all the arithmetic and logical operations on the data.