CPU

Explain CPU (Central Processing Unit)

It is also called processor. It is the brain of computer. It performs all operation on the data according to the instructions. It has two parts.       

i. CU         ii. ALU

i. CU (Control unit)

CU is the important component of CPU. It controls all activities of computer system. It is also called supervisor of computer.

ii. ALU (Arithmetic logic unit)

ALU is a part of CPU. All arithmetic and logical operation are performed in ALU. It consists of two units.

a)      AU (Arithmetic Unit)                                    b) LU ( Logic Unit)

a)  AU (Arithmetic Unit)

Arithmetic unit of ALU performs basic arithmetic function, such as addition, subtraction multiplication and division.

b) LU (Logic Unit)

Logic unit of ALU performs logical operations like comparing two data items to find which data item is greater than, equal to, less than the other.