Introduction to computers

INTRODUCTION

A Computer is an electronic device which performs operations such as accepts data as an input, store

the data, manipulate or process the data and produce the result as an output.

Main task performed by a computer:-

·         Accept the data                                                            

·         Process or manipulate the data

·         Display or store the result in the form of human understanding

·         Store the data, instructions and results.

A computer system is a collection of hardware and software components designed to perform computations very effectively.

Computer system consists of four parts:

a)Hardware:-Any device of the computer you can touch. Hardware consists of inter connected electronic devices that you can use to control the computer’s operation.

b) Software:-is a collection of programs which can performs several tasks.

c) Data:-it consists of raw facts, which the computer stores and reads in the form of numbers.

d)People(or)User:-people are the computer operators. 

 ADVANTAGES OF A COMPUTER (OR) FEATURES OF A COMPUTER

         High speed

        Accuracy --Reliability

        Diligence

       Versatility and Storage etc..

APPLICATIONS OF A COMPUTER

Education, 

Business, 

Defense and Military, 

Medical, 
Engineering, 

Transportation, 

Multimedia,
Industries,

Communications, 

Space Technology, 
Research, 

Science and etc..

DISADVANTAGES OF A COMPUTER

       Spoil eye sight if look on the monitor for a long time

     Expensive to buy a computer

       If Spoil have to go repair

       Use of computers require additional infrastructure such as power supply and Software back up.

A computer can understand only  binary language (or) machine level language (or) low level Language (or) 0’s and 1’s. 

Program is a set of instructions (or) statements that performs a particular task