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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 a typewriter for input
            and output. Mark-I was much more reliable than

            early electronic computers.
                                                                                          Mark-I


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