Internal Parts of CPU and Their Functions

Internal Parts of CPU:

CPU stands for Central Processing Unit. The Microprocessor or CPU is the computer’s most important component. It is the brain of a computer. It does all the thinking of the computer and it runs the program that you request. The CPU is usually made of a two-square-inch ceramic with a silicon chip located inside the system unit box. These micro-chip fits into the motherboard’s CPU socket, which is covered by the heat sink. It is an object that absorbs heat from the CPU. There are mainly three internal parts of the CPU.

• ALU
• CU
• MU

Functions of CPU Components:

ALU: It stands for Arithmetic Logic Unit. The ALU is a component of a Central Processing Unit (CPU). It Performs all arithmetic and logical operations. The data is transmitted to the ALU from the storage unit when required. After completing the whole operation, the result returns to the storage unit.

CU: It stands for Control Unit. The Control Unit (CU) is the main component of a Central Processing Unit (CPU) that directs the operation of the processor. The control unit works by receiving input data that it converts into control signals, which are then sent to the central processor.

The CU acts as the supervisor which determines the sequence in which instructions and programs execute. It retrieves the instructions from memory and decodes the instructions. Then it interprets the instructions and schedules the sequence of instructions to be performed accordingly. It transmits the instruction to other parts of the CPU to execute them.

MU: It stands for Memory Unit. MU is the primary memory for holding the processing data. The MU acts as a hub of all the data or information. It also works in sync with the CPU, thus it helps in faster accessing and processing of the data.