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i +   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 (The First Electro-Mechanical Powered Computer)

                  In 1944, Prof. Howard Aiken 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


                  ENIAC—The First Electronic Computer

                  The 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.






















                                                                 ENIAC




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