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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 integration.)
                       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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