Charles Babbage By:Ana Laura Soto Viquez October 2006
His Life Dec. 26, 1791 in London, England Attended religious schools Entered Trinity College at Cambridge Married and fathered eight children Died on October 18, 1871
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Acheivements Analytical Society Member of the Royal Society of Edinburgh and Royal Astronomical Society Difference engine Analytical machine
Contributions to Computers Father of Computers Analytical machine
Difference System Designs two difference engines Based on Prony’s logarithmetic Difference system
Table on difference system NN^2D1D D1= (n +1)^2 - n^2 =n^2 +2n+1 - n^2 = 2n + 1 D2= [2(n+1) + 1] - (2n + 1) =2n n - 1 =2
Difference Engine First automatic calculator Calculate numerical values and automatically print Solved polynomials without multiplication or division Estimated 25, 000 parts
© Science Museum/Science & Society Picture Library line/babbage/page3.asp Built by Joseph Clement in 1832.
Difference Engine Three times less pieces than No.1 No attempt to construct 4,000 parts and weighs 2.6 tonnes Built in 1991
Built by the Science Museum according to the original design by Babbage. © Science Museum/Science & Society Picture Library line/babbage/page4.asp
Analytical Machine Automatic and general process Use punched cards Store Mill Looped
Science Museum/Science & Society Picture Library
Summary Background Achievements Difference System and Engines Analytical Machine Contributions
Works Cited Pearson, John. "Charles Babbage: Background and Education." Charles Babbage (2006): 1. Middle Search Plus. 20 September Pearson, John. "Charles Babbage: The Difference Engine." Charles Babbage (2006): 2. Middle Search Plus. 20 September "Computer Milestones." World Almanac & Book of Facts (2006): Middle Search Plus. 20 September Gittleman, Arthur. "Babbage, Charles." World Book Online Reference Center [20 September 2006.]. Robinson, Tim. “Difference Engines” (26 January 2006) 20 September 2006 Swade, Doron. "Creating the first computer." History Today 41.9 (1991): 3-4. MAS Ultra - School Edition. 25 September © Science Museum “ Difference Engine” (2006) Science Museum 20 September