Introduction of Computer

     Today computer have changed our lives dramatically. Whether

it is the international cricket match,

or your favorite TV serial on prime

time, or your morning newspaper, computers have a crucial role to play

in our everyday life. The growth of nation is to sharpen our skills and

master new technologies. So, there must be a vital role to play for quality

computer education by the quality it education providing organizations

of our country.

                     But as computers may have become center to our life. We must

remember one thing computers do not control man’s destiny. It is man who

is superior to any one.

Definition of Computer 1:

Computer is a miraculous invention of science. It can store data and perform difficult calculations within a very short time. Its main features are speed and accuracy. Thus computer aids in speedy transaction and telecommunication. It is now widely used in schools, libraries, hospitals, office and banks. In factories, it is used to save manual and mental labour and for quality control. It is also used in research work in various fields like space research. Now computer course of different levels are being introduced in schools and colleges. The introduction of computers in selected fields is a must for efficient service. It has also opened up new avenues of employment. Finally, we must say that computer is the name of development.

Definition of Computer 2:

           Computer is an automatic electronic apparatus for making calculation

or controlling operations that are expressible in numerical or logical terms.

                                                                                                                                          Refered by Oxford Dictionary 

            The definition clearly categories computers as an electronic apparatus although the first computers were mechanical and electro-mechanical apparatuses. The definition also points towards the two major areas of computer applications viz. data processing’s and computer assisted controls/operation. Another important aspect of the definition is the fact that the computer can perform only those operations/calculation, which can be expressed in Logical

or Numerical terms.

           Computer is an advanced electronic device that takes raw data as input

from the user and processes those data under the control of set of instructions (called program) and gives the result (output) and save output for the future

use. It can process both numerical and non-numerical (arithmetic and logical)

Calculations.

and commands enter computer’s memory that enables the computer to store programs and data; and output devices, such as printers and display screens,

that show results after the computer has processed data.

HISTORY & PRESENT

              Let us now discuss the history of computers because this will give the

basic information about the technological development trends in computer in

the past and its projections for the future. If we want to know about computers

completely, then we must look at the history of computers and look into the

details of various technological and intellectual breakthroughs. These are

essential to give us the feel of how much work and effort has been done in the

past to bring the computer to this shape. Our effort in this section will be to

describe the conceptual breakthroughs in the past.

             The ancestors of modern age computer were the mechanical and electromechanical devices. This ancestry can be traced as far back as the 17^th Century, when the first machine capable of performing four mathematical operation, viz. addition subsequent subsection we present a very brief account of mechanical computers.