Mar 22, 2013

PARTS OF COMPUTER

1.INPUT DEVICE: The device through which computer receive data is known as input device.
Example- Mouse, Keyboard, Joystick, Trackball, Light pen, Scanner etc.

2.OUTPUT DEVICE: The device through which computer display the processed result at the end of each process is known as output device.
Example- Monitor, Printer, Speaker etc.
Parts of Computer

3.MEMORY UNIT: It is the storage unit of a computer where computer store all its data.
                
Memory unit is divided into two types.....
A.PRIMARY MEMORY:
* High speed memory.
*Small storage capacity.
*Use to supply space for different operations within a computer system and also for basic input output system.
       Types of primary memory.....
   1. RAM
   2. ROM

B.SECONDARY MEMORY:
*Slow access speed.
*High storage capacity.
*Use to store data permanently.
Example- Hard disk, CD, DVD, Memory Card, Pen Drive etc.

4.PROCESSING UNIT: Processing unit of a computer is also known as CPU(central processing unit). It is the brain of a computer where all processing in controlled or done.
The processing unit is divided into three parts...
A. ALU(arithmetic logic unit)
B.CU(control unit)
C.Register.

5.POWER SUPPLY UNIT(SMPS): SMPS stands for switch mode power supply. It is a main power supply to power the each and every component of computer. It converts the main power supply 230 volts to 12 volts, 5 volts, 3 volts and distribute to all components of computer.

Types of SMPS:
1. AT SMPS
2. ATX SMPS
3. BTX SMPS

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