Page 13 - CA 165 ver 1.0 Class 9
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Unit-1: BASICS OF INFORMATION TECHNOLOGY


                                                        BASICS OF                                           1


                                        INFORMATION TECHNOLOGY







                 With the advent of computers, extraordinary development has taken place in the field of information
                 and appliances of communication, which has given rise to the era of Information Technology (IT).

                 Information Technology has led to the establishment of a global network and has brought people
                 from different corners of the world to connect with each other. It allows anytime anywhere access
                 and instant sharing of data/information. IT has laid a great impact on our society.






























                 Information Technology is the use of computers to gather, process, store, protect and transfer
                 information. Modern computers are a storehouse of augmenting information.

                 ‘A computer is an electronic device which performs numerical calculations (+,-, *, /) and logical
                 operations (AND, OR, NOT) at high speed and produces information that are expressible in numerical
                 as well as in logical form’.
                 A computer is an electronic machine that accepts data and processes it to produce meaningful
                 results & accomplish various tasks.


                   DESIGN OF COMPUTER
                 A computer performs  action and accomplishes  its  tasks  in three basic stages namely:  Input,
                 Process and Output. It works according to a set of pre-defined programs. A program is a set of
                 sequentially arranged instructions which directs the computer to process the input, in order to
                 produce the required output or result.




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