Table

Computer Generation

Generation Years Chief Components Memory Elements Operating System Language Examples
1st 1940-55 Vacuum Tubes/Electronic valves for circuitry Magnetic drums for memory No Machine language (Lowest-level programming language)
  • ENIAC
  • EDSAC
  • EDVAC
  • UNIVAC
2nd 1956-63 Transistors (invented in) 1947 Magnetic cores Magnetic Tapes No Assembly Language High level language e.g., FORTRAN, COBOL
  • IBM 700/1401
  • IBM 7030
3rd 1964-71 Integrated Circuits (semi conductors were used) RAM, DISKS LINUX ALGOL C, C++ JAVA SQL
  • CDC 6600/760
  • IBM 360
  • IBM 370
  • CRAY-1
4th 1972 Present LSI (Large Scale Integration)/VLSI (Very Large Scale Integration) All Primany, Secondary Storage devices Windows DOS, LINUX SQL ORACLE All PC’s & Desktops, CRAYX-MP
5th Development phase Artificial Intelligence, Robotics & Nano Science Some application such as voice recognition that are being used today are based on artificial intelligence.
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