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Computer History

Computer History. How did we get here?. The First Computers. People Navigation tables, planetary positions, artillery tables http:// www.computerhistory.org/revolution/calculators/1/65/2209 First 3:00. Calculation Aides. Tools to calculate with: Abacus Napier’s bones Slide rule.

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Computer History

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  1. Computer History How did we get here?

  2. The First Computers • People • Navigation tables, planetary positions, artillery tables http://www.computerhistory.org/revolution/calculators/1/65/2209First 3:00

  3. Calculation Aides • Tools to calculate with: • Abacus • Napier’s bones • Slide rule

  4. Calculating Machines • Pascaline • 1642 mechanical calculator • Gear driven

  5. Binary • Gottfried Leibniz • Four function calculator • Advocated calculating with binary numbers

  6. Weaving • Joseph Jacquard • 1801 : power loom • Punch card driven patterns

  7. Difference Engine • Charles Babbage • 1822 • Difference engine : Steam powered calculator • Set the stage for IT overruns • Analytical Engine • Punch card programmable • Memory & Processing separate • Ada Byron • First programmer http://www.computerhistory.org/revolution/calculators/1/51/2205

  8. Changing Society • Herman Hollerith : Hollerith Desk • Built for 1890 Census • Read/Write storage • Census complete in 3 years • Founded company now knownas IBM

  9. Mark I • 1944 • First digital programmable computer • Mechanical • WWII Firing tables • 8ft by 51ft

  10. First Bug • Grace Hopper • Programmer for Mark I • Designed first compiler

  11. Electric Calculator • Colossus • Built by Great Britain • Code breaking calculator http://www.computerhistory.org/revolution/birth-of-the-computer/4/82/2218

  12. Electrical Computer • ENIAC: Electronic Numerical Integrator and Calculator • 20x40 foot room • Programmed with patch cords and dials

  13. Modern Era Starts • 1stgeneration modern computers • Stored program • Vacuum tube switches • Manchester Baby • First working storedprogram computer • EDVAC • Von Neumann and Eckertt • Program represented electronically

  14. Transistors • Electronic switches • Invented 1947 http://www.computerhistory.org/revolution/digital-logic/12/272/2217

  15. Modern Era • Second Gen : 1950’s & 60’s • Transistor based • Mainframe era

  16. Modern Era • Third Gen : 1960’s-1970 • Integrated circuits • Blocks of transistors • Monitors / Keyboards / Operating Systems

  17. Apple • Fourth Gen 1971+ • Microprocessor • Processor on a chip • PC as hobby – late 1970s • Altair & Apple I

  18. PC Era • 1981 - IBM PC • Highly successful personal computer • MS-DOS

  19. Ubiquitous Computing • Computers everywhere • Phones, cars, DVRs, toys, etc… • Highly Integrated Circuits • Multiple parts of a computer on one chip

  20. So Who Invented It? http://www.computerhistory.org/revolution/birth-of-the-computer/4/91/2214

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