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Computer Basics

Introduction
Brief history of computers
Development of computers
Characteristics of computer
Generations of computer
Functions of computer.
Main parts of computer
Types of computers
Computer system



Main parts of computers

The two main parts of computer are,
  • Hardware
  • Software
  • Hardware

The physical components of a computer system is called hardware. All these physical components of a computer have mass and can be touched with our hands. The wires that are used to interconnect these physical components are also considered as hardware. 

亚博网址多少the hardware that is used to supply input is called input device and hardware that is used to display output is called output device. the hardware that is used to process data is called processing device.

Ex : The various physical components of a computer are monitor, mouse, keyboard etc.
  • Software

Software is commonly known as programs, consists of all the instructions that tells the hardware, how to perform each task. Software is held either on your computers CD-ROM, DVD, hard disk and copied from the disk in to the computer RAM (Random Access Memory), when required.

Software is not a physical object, so we can't touch it with our hands. They does not have mass. In order to work computer system both hardware and software are needed.


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