Tuesday 31 July 2018

Central Processing Unit | CPU

Central Processing Unit | CPU

Central Processing Unit (CPU) is the most important part of a computer. It manages overall functions of the computer system. It does all calculations and displays the results on the monitor. The main components of a CPU are Memory Unit (MU), Arithmetic Logic Unit (ALU) and Control Unit (CU)

Memory Unit (MU) : Memory unit stores the information either temporarily or permanently according to need.

Arithmetic Logic Unit (ALU) : THis unit performs all arithmetic calculations and logical operations.

Control Unit (CU)  : It manages all the operations of a computer.

If we give instructions to computer to add two numbers 10 and 4,  the control unit sends the data to ALU to perform calculations and display the result 14 through the output device.

The most important parts of CPU are 

Power switch : It is used to turn the computer on and off.

Reset button : This button is used to restart the computer without switching it off.

CD-ROM Drive : CD-ROM drive is used to copy the software and programs from  CD-ROM to hard disk. It is just like a CD player of a music system where we insert a CD to listen to music.

 


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