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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.

                                          Faster and reliable.
                    Transistor

                  Third Generation (1960s)


                  In the third generation, the invention of Integrated
                  Circuits  (IC)  led  to  smaller-sized computers  with
                  better  functioning and more storage.  They were
                  smaller,  cheaper,  and  more  efficient  than  the
                  previous two generations, and were sometimes called
                                                                                               Integrated Circuits
                  minicomputers.





                             Features of Third Generation Computer


                                 These computers were made of ICs.
                                 The use of the ICs reduced the size and increased the speed of
                                the computers.
                                 They were more affordable and dependable.




                  Fourth Generation (1970s)

                  In the 1970s,  Very Large Scale
                  Integration (VLSI) came into existence

                  in which  thousands of  transistors
                  were  placed  on a single chip called a
                  microprocessor. They were sometimes
                                                                         Microprocessor
                  called microcomputers.
                  IBM released their first line of desktop

                  PC, which used Intel 8088 chip as CPU.
                  In 1983, IBM introduced the  PC-XT,                                                IBM PC
                  which had more memory and more hard drive space.

                  In 1985, Microsoft released the first version of Microsoft Windows.





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