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History of Computers

History of Computers. (What came before our modern time-saving devices). By Miss Hall and Mrs. Batchelor, 2014. Inventors of PRE-Computers. The Abacus. PASCAL and LEIBNIZ. Jacquard’s loom. Hollerith’s & Babbage’s machines. GENERATIONS OF COMPUTERS. 1 st & 2 nd generation.

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History of Computers

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  1. History of Computers (What came before our modern time-saving devices) By Miss Hall and Mrs. Batchelor, 2014

  2. Inventors of PRE-Computers

  3. The Abacus

  4. PASCAL and LEIBNIZ

  5. Jacquard’s loom

  6. Hollerith’s & Babbage’s machines

  7. GENERATIONS OF COMPUTERS

  8. 1st & 2nd generation

  9. 3rd & 4th generation

  10. Super Computer • Supercomputers – are the largest, fastest and most powerful computers at present.

  11. Mainframe Computers • Mainframe – these computers are very expensive and can handle more than hundred users at a time. They are found in large organization such as banks.

  12. Mini Computers These become outdated and are rarely used today. They were very popular in the 1960s.They take up less space, may fit on a desk or take up the space of filing cabinet. Modern versions would be something like servers

  13. Microcomputer This type of computer includes those for general purpose and for business needs. They are usually called PC’s (Personal Computers) based on the microprocessor.

  14. Types of Computers

  15. REFERENCES • http://history-computer.com/MechanicalCalculators/Pioneers/Lebniz.html • http://www.thocp.net/hardware/pascaline.htm • http://www.computersciencelab.com/ComputerHistory/HistoryPt2.htm • http://www.zdnet.com/blog/open-source/mainframe-ubuntu-linux/9491 • http://www.shirazjju.com/1390/12/computer-generations-english/ • http://danjo.city.kashiwa.lg.jp/gakushuu/pcschool/pc_history/comp_history02.htm • http://mally.stanford.edu/leibniz.html THE END..

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