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  • 1. History of Computersby Aaron Goldwasser
  • 2. • ENIAC (electricalnumerical integrator andcalculator).• used from 1946 to 1955• used vacuum tubesFirst Computer
  • 3. Progression ofHardware• 1950s:Vacuum tubes• 1955-1965:Transistors• 1965-1975: Integrated circuits• 1967- 1970: Circuit boards• 1970-now: Silicon computer
  • 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. 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. Integrated Circuits• Made by Jack Kilby and Robert Noyce• Thousands of bits on the size of a fingernailRobert NoyceJack Kilby
  • 7. Circuit Boards• made by Paul Eisler in 1967• thousands of bits on the size of a hand
  • 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. First PC• made by Philip Don Estridge• made in 1980• named IBM PC
  • 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. First Major Apple OS• Apple introduces System 7 OS May 13,1991.
  • 12. First Notebook• IBM introduces ThinkPad, the industrys firstnotebook, in
  • 13. Webpage• President Bill Clinton puts the United StatesWhite House online on 26th Jun, 1993.
  • 14. made• Microsoft releases Internet Explorer 1.0 onAugust 16, 1995
  • 15. Google lives!• Google is first developed by Sergey Brin andLarry Page.
  • 16. Facebook goes online• The domain comes onlineMarch 28, 1997
  • 17. Sony makes the memorystick• Sony introduces the Sony Memory Stick.
  • 18. First iMac• Apple introduces the iMac, the iMac helpsbring Apple back on the computer maps as avery easy and friendly computer
  • 19. Microsoft bails outApple• Microsoft saves Apple with a $150 millioninvestment August 6, 1997
  • 20. Windows XP is released• Microsoft Windows XP home andprofessional editions are released October25, 2001.
  • 21. Windows 2000• Windows XP is released.