Hard disk

A magnetic disk on which you can store computer data.

Motherbord

The most essential component in a personal computer
This contains the computer's micro-processing chip and everything attached to it is vital to making the computer run.

RAM

random access memory
a type of computer memory that can be accessed randomly
There are two different types of RAM
DRAM (Dynamic Random Access Memory)
SRAM (Static Random Access Memory).
DRAM - common type
SRAM - faster

Processor

A processor is the logic circuitry that responds to and processes the basic instructions that drive a computer.
The processor in a personal computer is called a microprocessor.
There are two primary manufacturers of computer microprocessors. Intel and Advanced Micro Devices (AMD) lead the market in terms of speed and quality.

Power Supply Unit.

Power Supply Unit.
This component supplies power to other component in a computer.
Power supply unit converts alternating current (AC) to Direct current (DC)
Power supplies have a switch to change between 230 V and 115 V.
Some models have automatic sensors which switch voltage automatically.
Or accept any voltage between it’s limit.

Connecting Peripherals

Connecting Peripherals

PS/2 port is use to connect mouse or keyboard.
Green color port always use to connect the Mouse
Ps/2 port which use to connect keyboard can be black or purple in color.
VGA port – (Video Graphic Array) to connect the monitor
Serial port - To connect modems serial mouse etc.
Parallel port – to connect printers and scanners.
LAN port- Use to connect computer to Local Area Network.
Audio ports – Green color port always use to connect speakers.
Other ports use to connect microphone etc.
USB ports – Use to connect pen drive USB mouse Keyboard etc.

Parts of a Computer

WHAT IS A COMPUTER

A machine for performing calculations automatically.
It is a machine that manipulates data according to a set of instruction.
First electronic computer developed in 1940-1945.These computers were a size of a large room.