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સોમવાર, 23 સપ્ટેમ્બર, 2013

INVENTORS OF COMPUTER HARDWARE

INVENTORS OF COMPUTER HARDWARE
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(Gujarat General Knowledge)

1. Key board — Herman Hollerith, first keypunch device in 1930’s

2. Transistor — John Bardeen, Walter Brattain & Wiliam Shockley (1947 - 1948)

3. RAM — An Wang and Jay Forrester (1951)

4. Trackball — Tom Cranston and Fred Longstaff (1952)

5. Hard Disk — IBM , The IBM Model 350 Disk File (1956 )

.6. Integrated Circuit — Jack Kilby & Robert Noyce (1958)

7. Computer Mouse — Douglas Engelbart (1964)

8. Laser printer — Gary Stark weather at XEROX in 1969.

9. Floppy Disk — Alan Shugart & IBM( 1970)

10. Microprocessor — Faggin, Hoff & Mazor – Intel 4004

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