Component of computer Part-2

Component/configuration of computer

Central Processing Unit/CPU

Central Processing Unit (CPU) is the main part of the computer system. It control various components of computer system and perform all operations on data according to programe instructions.

CPU consist of two parts

i)   Control Unit/CU
ii)   Arithmetic & Logical Unit/ALU

Control Unit/CU

i)  Control Unit control the functions of computer. It controls input output device functions and complete all process.

Arithmetic & Logical Unit/ALU

ii) All mathematical calculation (+, -, /, X) can make comparisons like less then (<) greater then (>) and equal (=) etc.

CD-ROM

CD-ROM stand for Compact Disk Read Only Memory. The data on a CD-ROM can only be read cannot be delete or change and write.

       It is the most commonly used type of optical storage. It has the storage capacity of up to 650MB. It is used for storing large amounts of data and application program.

DVD-ROM

DVD-ROM stand for Digital Video Disk Read Only Memory. The working of DVD is similar to that of the CD-ROM. A DVD uses laser and its storage capacity is seven times than CD-ROM. DVD can store up to 4GB of data.

CD/DVD Burner/ Writer

It write on CD/DVD
There are two types discs
          i)  Writable Disk
         ii)  Re-Writable Disk

 Watch video to see how do CDS work?