CPSC 121: Models of Computation Module 10: A ... - Ugrad.cs.ubc.ca

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Module 10: A Working ComputerHistorical notes:Early 19th century:Joseph Marie Charles dit Jacquard used punched papercards to program looms.CPSC 121 – 2012W T2 7Module 10: A Working ComputerHistorical notes (early 19th century continued):Charles Babbage designed (1837) but could not build thefirst programmable (mechanical) computer, based onJacquard's idea.http://www.computerhistory.org/babbage/CPSC 121 – 2012W T2 8
Module 10: A Working ComputerHistorical notes (continued):1941: Konrad Zuse builds the first electromechanicalcomputer.It had binary arithmetic, including floating point.It was programmable.1946: the ENIAC was the first programmableelectronic computer.It used decimal arithmetic.Reprogramming meant rewiring.All its programmers were women.CPSC 121 – 2012W T2 9Module 10: A Working ComputerHistorical notes (mid 20 thcentury, continued)The first stored-program electronic computers weredeveloped from 1945 to 1950.Programs and data were stored on punched cards.CPSC 121 – 2012W T2 10
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CPSC 121: Models of Computation Module 10: A ... - Ugrad.cs.ubc.ca

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