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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

                  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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