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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 1945 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.





















                                                                 ENIAC





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