First Generation Of Computers (1940-1950)

• In this computer used vacuum tube.
• Machinery language added in this computer.
• Consume a lot of electricity.
•  Very slow and very large in size.
• Used punched cards and paper tape.
•  There were about 100 different vacuum tube computers produced between 1942 and1963.
  

   Second Generation Of Computers (1950-1960)

  

  • Used magnetic core and tapes.
  • Assembly language used.
  •  Generated less heat.
  •  Improve the speed this computer.
  • Used punched cards.
  • Examples  IBM 1401, IBM 7090 and 7094, UNIVAC 1107 etc.
    

    Third Generation Of Computers (1960-1970)

    • Use a integrated circuits (ICs).
    •  High level language (FORTRAN, BASIC, Pascal, COBOL, C, etc.)
    •  Improve the speed.
    • Used output devices like monitor, printer, etc.
    • Examples like IBM 360, IBM 370, PDP-11etc.
      

       Fourth Generation Of Computers (1970-present)

      • Used (VLSI) and microprocessor.
      •  Used RAM, ROM.
      • Fourth generation is better than third.
      • In this computer speed is very nice.
      • Used both devices input and output like mouse,printer,scanner etc..
        

        Fifth Generation Of Computers (the present and the future)

        • 

          Main electronic component: based on artificial intelligence, uses the Ultra Large-Scale Integration (ULSI) technology and parallel processing method

        • Language – understand natural language (human language).
        • Power – consume less power and  less heat.
        • Speed – remarkable improvement of speed, accuracy and reliability (in comparison with the fourth generation computers).
        • Size – portable and small in size, and have a huge storage capacity.
        • Input / output device – keyboard, monitor, mouse, trackpad (or touchpad), touchscreen, pen, speech input (recognise voice / speech), light scanner, printer, etc.