pebbledawg

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pebbledawg

  1. 1. History of Computersby Aaron Goldwasser
  2. 2. • ENIAC (electricalnumerical integrator andcalculator).• used from 1946 to 1955• used vacuum tubesFirst Computer
  3. 3. Progression ofHardware• 1950s:Vacuum tubes• 1955-1965:Transistors• 1965-1975: Integrated circuits• 1967- 1970: Circuit boards• 1970-now: Silicon computer
  4. 4. Vacuum Tubes• Invented in 1906 by Lee de Forest• Big as a fist• The tubes heat up and release electrons into the tubes• Acts as switch or an amplifier
  5. 5. Transistors• invented in 1958 by Jack C. Kilby• Solved a lot of problems that vacuum tubeshad• Had problems of its own• Likelihood of faulty wiring increased themore complex the circuits became
  6. 6. Integrated Circuits• Made by Jack Kilby and Robert Noyce• Thousands of bits on the size of a fingernailRobert NoyceJack Kilby
  7. 7. Circuit Boards• made by Paul Eisler in 1967• thousands of bits on the size of a hand
  8. 8. Silicon Chip• made by Jack Kilby and Robert Noyce• millions of bits on the size of a finger nail• made in 1970Jack KilbyRobert Noyce
  9. 9. First PC• made by Philip Don Estridge• made in 1980• named IBM PC
  10. 10. Internet Begins• In 1990 Tim Lee, working with RobertCailliau at CERN propose a hypertextsystem, which is the first start of theInternet as we know it today.
  11. 11. First Major Apple OS• Apple introduces System 7 OS May 13,1991.
  12. 12. First Notebook• IBM introduces ThinkPad, the industrys firstnotebook, in
  13. 13. Webpage• President Bill Clinton puts the United StatesWhite House online on 26th Jun, 1993.
  14. 14. made• Microsoft releases Internet Explorer 1.0 onAugust 16, 1995
  15. 15. Google lives!• Google is first developed by Sergey Brin andLarry Page.
  16. 16. Facebook goes online• The domain facebook.com comes onlineMarch 28, 1997
  17. 17. Sony makes the memorystick• Sony introduces the Sony Memory Stick.
  18. 18. First iMac• Apple introduces the iMac, the iMac helpsbring Apple back on the computer maps as avery easy and friendly computer
  19. 19. Microsoft bails outApple• Microsoft saves Apple with a $150 millioninvestment August 6, 1997
  20. 20. Windows XP is released• Microsoft Windows XP home andprofessional editions are released October25, 2001.
  21. 21. Windows 2000• Windows XP is released.

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