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computer history

Grace Murray Hopper

Blaise Pascal 1623-1662 Invented a mechanical calculating device called Pascaline. 1642 Device performs only addition. Device never worked properly.
Gottfried Wilhelm von Leibniz 1646-1716 Invented the Stepped Reckoner in 1670. Device was supposed to add, multiply, subtract and divide but malfunctioned.
Charles Babbage 1792-1871 Analytical Engine-calculating machine that used punched cards to store information in 1842. Chief Collaborator was Ada Byron 1815-1852.
Herman Hollerith 1860-1929 Invented the tabulating machine in 1890. Used electricity instead of gears to perform calculations.
John Atanasoff 1903-1995 Clifford Berry 1918-1963 Atanasoff-Berry Computer (ABC) (1939) used binary number system used in computers today. Contains 100's of vacuum tubes.
Mark 1- 1944 Over 51 feet long and weighed over 5 tons. ASSC (Automatic Sequence Controlled Calculator). Devised by Howard H. Aiken at IBM. The first large-scale automatic digital computer. Considered by some to be the 1st universal calculator.
John Mauchly 1907-1980- J. Presper Eckert 1919-1995 Worked on ENIAC (Electronic Numerical integration and Calculator) in 1946. Solves mathematical problems faster. Originally a military project that was "top secret".
Alan Turing 1912-1954 Developed idea of a universal machine in the late 30's and 40's. Called the Turing Machine. The "Enigma".
Jon Von Neumann 1903-1957 Could divide 8 digit numbers in his mind at the age of 6. Built the EDVAC (Electronic Discrete Variable Automatic Computer) with mauchly and Eckert in 1947. Inspired the construction of EDSAC (Electronic Delay Storage Automatic Calculator) in 1949.
Transitor Invented in 1947 by William Shockley, John Bardeen and Walter Brittain. One transistor replaced many tubes, making computers smaller, less expensive and reliable.
grace Murray Hopper 1906-1992 Received the 47 honorary awards. Designed COBOL (Common Business Oriented Language) a programming Language. 1st programmer for Mark 1.
Jack Kilby 1923-2005 Developed the 1st integrated Circuit in 1958. Invented the 1st hand held calculator. Studied electrical engineering.
William Gates October 28,1955 Founder of Microsoft Corporation. Started Microsoft company in 1975 with Paul Allen.
Paul Allen Jan. 21, 1953 Co-founder of Microsoft Corporation. Owner of Portland Trail Blazers.
Thomas Knoll John Knoll Software engineers. Creators of Adobe Photoshop 1988.
Peter Arvai Peter Halacsy Adam Somlai Fischer Prezi Established in 2009. Used by professors, students and business men/women.
Created by: pagdatopatrick