What is computer?

What is Computer:

 Computer is a programmable device or electronic device .It accept data supplied by the user. it gives output according to user requirement.

Generally it means to calculate or programmable machine. computer can not do anything without a program. It represent the decimal numbers through a string of Binary digits.

               Charles Babbage is Called the Grand father of the computer

                                                

History of Computer

  The first computer was invented in the 1820s by  Charles Babbage .However the first electronic digital computer were developed between 1940 and 1945 in the united states and in the united kingdom. The history of computer hardware covers the developments from simple devices to aid calculation, to mechanical calculators, punched card data processing and on to modern stored program computers. The tools  or mechanical tool used to help in calculation are called calculators while the machine operator that help in calculations is called computer.

                       Computer works in IPO cycle:

I-Input

P-Process

O-Output

It perform both type of operation  Arithmetic as well ass logical operation.

Characteristics of computer

1.Speedc

2.Versatality

3.Accuracy

4.Power of remembering

5.No tiredness

1.Speed: 

            It is a very fast device .the computer takes a fraction of second to perform any operation . A powerful computer is capable of performing  about 3-4 million simple operations per second. 

 A computer is very speed as compare to  men.

2.Versatality:

                  versality is one of the most wonderful things about the computer.one moment it can do any one operation and next moment if can perform any other operation.

a computer is capable of performing almost any task according to given instructions.

3.Accuracy:

              the accuracy of computer is very high and the degree of a particular computer depends upon its design. but for a particular computer, each and every calculation is performed with the same accuracy.

4.Power of remembering:

                                  It is capable for remembering information about data .The computer can store and recall the information at any time because of the presence of the  secondary storage devices, but this is not possible with the human beings.

Although the brain of human being can store unlimited data .

5.No tiredness:

                It is no tiredness because A computer is a electronic or programmable device.

you can do different types of  operation on computer without any problem. It is always useful when can you use it.

       computer organization:*

The internal arrangement of different computer of computer system is called computer organization.

      

            Computer Architecture:*

The internal design of different component of computer system is called computer architecture.