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    UNIVAC

                     UNIVAC or Universal Automatic Computer, was another successful invention of

                     John Mauchly and Presper Eckert in 1951, which could handle both numeric and
                     textual information. The UNIVAC had 5200 vacuum tubes.

                                                                   UNIVAC

                                Features of First Generation Computer

                                    Huge in size.

                                    Very expensive.
                                    Made up of vacuum tubes.

                                                                                                    Vacuum tube
                     Second Generation (1950s)

                     After  1955, the use of  transistors and  magnetic
                     tapes changed the image of the electronic computer.

                     During this period, the major computer manufacturers
                     began to offer a range of accessories such as: Page
                     Printers, Cathode Ray-Tube display, Card Feeders,
                                                                                                Magnetic tape
                     etc. They were  smaller, faster, more reliable and
                     more energy-efficient.

                                          Features of Second Generation Computer

                                            Made up of transistors.
                                            Magnetic tapes were used to store data.

                                             Small  in  size  and  less  expensive  than  the  first  generation
                                            computer.
                       Transistor            Faster and reliable.

                                                                                            Evolution of Computers       11

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