Eventos
Abacus (2700-2300 B.C.)
The Abacus was an early calculating tool.
It worked by shifting balls along a pole of metal.Blaise Pascal
(June 19, 1623 - August 19, 1662)
Born in Clermont-Ferrand, FrancePascaline (1645)
The pascaline is a mechanical calculator.
The calculater featured mechanical wheels with spokes labeled 0-9. To input a number, the user would place a stylus in the corresponding place between the spokes.Gottfried Wilhelm Leibniz
(July 1, 1646 - Nov 14, 1716
Lived in the Holy Roman Empire.Leibniz Machine (1671)
Was a mechanical machine that represented numbers in decimal form. Did multiplication by repeated addition and shifting.Binary Code (1679)
Uses a two-symbol system, like 0 & 1, to represent numbers and letters. Assigns a pattern of binary digits (bits) to each character.George Boole (Nov 2, 1815 - Dec 8, 1864)
Born in Lincoln, lincolnshie, England.Boolean Algebra (1847)
First seen in George Boole's book, "The Mathematical Analysis of Logic," it a branch of algebra In which the values of the variables are the truth values true and false, usually denoted 1 and 0 respectively.
Normal Prime operators, (+,-) are replaced by conjuctions, denoted as ∧ and ∨.Charles Babbage (1791 - 1871)
A mathematician, and philosoper.Babbage's Difference Engine No. 1
First automated calculator.
Was an engineering marvel.Hermin Hollerith (1860 - 1929)
Born in Buffalo New York.Tabulator
A machine that was able to hold information.
Used punched out cards.Vannevar Bush (1890 - 1974)
Born in Everett, Masachusetts.Rockefeller Differential Analyzer (1942)
Electronic version of the Differential Analyzer. Used over 200 miles of wire.Claude Shannon (1916 - 2001)
Born in Petoskey, MI.
He created the first digital circuit.Alan Turing (1912 - 1954)
Born in Maida Vale, London, England.
Created what many called the first general purpose computer.Konrad Zuse (1910 - 1995)
Born in Berlin, Germany
Created the first programmable computerJohn Atanasoff and Clifford Berry
(1903 - 1995) (1918 - 1963)
John A. - Born in Hamilton, NY. Invented the first electronic digital computer.
Clifford Berry - Born on Gladbrook, IA. Helped create the digital computer.Howard Aiken (1900 - 1973)
Born in Hoboken, NJ.Harvard Mark 1 (1944)
Was a general purpose electromechanical computer.
Build from switches, relays, rotary shafts, and clutches. Could exucute long computations automatically.John Mauchly J. Presper Ecker (1919 - 1995)
Born in Philadelphia, PA
Electronic Numerical Integrator And Computer (ENIAC)The Triathlon of People
John Bardeen - (1908-1991) Born in Madison WI
Walter Brattain - (1902-1987) Born in China Amoy
William Shockley - (1910 - 1989) Born in Greater London.
They all worked on superconductors, and transistors.Federico Faggin - (1941 - Present)
Marcian Edward Hoff - (1937 - Present)
Worked to create the microprocessor.Ed Roberts (1941 - 2010)
Born in Miami, Florida.
Invented the first commerical super computer.Steve Wozniak (1950 - Present)
Born in San Jose, CA.
Co-founded Apple.Apple I (1976)
Apple's first home electronic computer.Apple II (1977)
First mass prodiced 8-bit microcomputer.Gary Kildall (1942 - 1994)
Born in Seattle, WA.
Founded Digital Research, and made the CP/M operating system.Bill Gates (1955 - Present)
Born in Seattle, WA.
Created Microsoft, which would grow to be the largest operating system in the world.Alan Kay (1940 - Present)
Pioneered object- oriented programming.
Born in Springfield, MA.Steve Jobs (1955 - 2011)
Born in San Francisco, CA.
Co-founded Apple, and the company led technology innovations.Bob Metcalfe (1946 - Present)
Born in Brooklyn, NY.
Founded 3com, and formulated Metcalfe's law.Tim Berners-Lee (1955 - Present)
Born in London, UK.
Created the World Wide Web
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