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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 the first generation computers.
                  MARK-I


                  In 1944, Prof. Howard Aikens built the first electro-mechanical powered computer
                  named Mark-I. It used punched cards and a typewriter for input and output. It
                  was 50 feet long, 8 feet high, weighed 5 tons, and could perform operations like
                  addition,  subtraction,  multiplication, division, and  referring  to  previous  results.
                  Mark-I was much more reliable than early electronic computers.





















                                                                 Mark-I
                  ENIAC

                  Electronic  Numerical Integrator and Computer,  was  the  first  electronic
                  general-purpose digital computer, built in 1946 by John Mauchly and Presper
                  Eckert. It contained over 18,000 vacuum tubes and was 1000 times faster than
                  Mark-I. ENIAC consumed almost 200 kW of power. It had no internal storage and
                  required frequent maintenance.






                                                                           Clickipedia



                                                                             The  first  electronic  computer
                                                                             ENIAC weighed  more than  27
                                                                             tons and took up 1800 square
                                                                             feet.

                                        ENIAC




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