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SECOND GENERATION

                      Timeline: 1950s
                      Technology: Transistors
                      Example of Computer: UNIVAC III, IBM 1401, IBM
                      700 and Honeywell 200, etc.
                      Features:
                         More efficient and economical
                         Smaller in size compared to first-generation computers
                         Could calculate data in seconds



                                                       THIRD GENERATION

                      Timeline: 1960s

                      Technology: Integrated Circuits or ICs (An IC is also called
                      a chip, and it houses a large number of transistors in it.)
                      Example of Computer: IBM 360, Apple 1, UNIVAC 1108,
                      and UNIVAC AC 9000
                      Features:

                         Faster and more economical than second-generation computers
                         Highly reliable
                         The keyboard and the mouse were used for input purposes

                         Used an operating system, thereby allowing many applications to run at one
                        time





                                                      FOURTH GENERATION

                      Timeline: 1970s
                      Technology: Microprocessor (A Microprocessor is the
                      entire CPU on a single chip. It is a VLSI circuit. VLSI

                      stands for Very Large-scale Intergration).
                      Example  of Computer:  Desktop,  HP 9000, IMP PC,
                      Apple Macintosh

                      Features:
                         Reduction in the size of computer
                         More reliable than the earlier generation of computers with a great storage
                        device

                         Extremely powerful and can process millions of instructions per second





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