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LADY ADA LOVELACE’S PROGRAMS

                 The instructions given to Babbage’s Analytical Engine

                 were  in  the  form  of  0’s  and  1’s  and  the  first  person
                 to introduce this concept was  Lady  Ada  Lovelace.
                 Since  she  was  the  first  to  introduce  the  concept  of
                 programming, she is known as the  first  computer

                 programmer.
                                                                                                 Lady Ada Lovelace
                      HERMAN HOLLERITH’S TABULATING MACHINE


                 Herman  Hollerith, an army engineer, built a machine called the  Tabulating
                 Machine in 1890. The machine read and stored data from punched cards. After the
                 success of this machine, Hollerith formed a Computing Tabulating Recording

                 Company to sell his machine. Later in 1924, his company became a part of
                 International Business Machines Corporation, today popularly known as IBM.



















                                       Hollerith’s Tabulating Machine                   Herman Hollerith

                     COMPUTER GENERATIONS

                 After these early calculating machines, the present computer took its shape in five
                 generations.

                 First Generation (1940s)

                 There were many computers that were a part of first generation computers.
                 MARK-I (The First Electro-Mechanical Powered Computer)


                 In 1944,  Prof.  Howard  Aikens  built  the  first
                 electro-mechanical computer named Mark-I. It
                 used punched cards and typewriter for input and

                 output. Mark-I was much more reliable than the
                 earlier electronic computers.
                                                                                               Mark-I


                                                                                          Evolution of Computers   9
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