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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 communication technologies, 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 that  performs numerical calculations (+,-, *, /) and logical
                 operations (AND, OR, NOT) at high speed and produces information that is 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 and accomplish various tasks.


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


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