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    Evolu Evolu Presentation Transcript

    • Evolution ofComputers
    • The AbacusIt was the earliestcalculating machineprobably originatedin China about3,000 years ago.In China it is alsoknown as SwanPan.
    •  It is consists of a rectangular wooden frame with horizontal rods. It is consist of several columns, farthest to the right represent ‘ones’, the next one ‘tens the hundreds and so on.’
    • John NapierA mathematician,developed a devicehaving a set of rodsmade of bones. In 1964, John Napierintroduced Logarithms.
    • Blaise PascalHe was a FrenchMathematician born on19th June 1623 atClermont- Ferrand.He was only 19 yearsold, when he invented acalculating machine calledPascaline.
    • Analog ComputerThese are fundamentallydifferent in principle from themodern digital computers.It is use in simple devices,even they are mechanicallycomplicated.
    • Joseph- MarieJacquard (1752-1834)He introduced anew weaving loom in1805.The JacquardsWeaving Systemusing punched cardattracted manyscientist.
    • Charles Babbage (1792-1871)He was inspired by the punched Cardto idea, developed an idea of usingpunched cards to input data.He continued his efforts and putforward an idea of a machine thatcan do 60 calculations per second.The Analytical Engine stamped thefoundation for modern computing.
    • The First Programmer Ada AugustaKing (1815-1852)The daughter of LordByron, was thepersonal assistant ofCharles Babbage.
    • She suggested binary datastorage and wrote the firstcomputer program for theAnalytical Engine.The ADA software was named
    • George Boole (1815-1864)He was self taughtEnglish MathematicianHis theory of Booleanlogic becamefundamental to thedesign of computercircuitry.
    • Dr. Herman HollerithHe developedpunched card systemfor storing and retrievingdata.He also built thetabulating machine toread the cards andprocessing data.
    • He started Tabulated MachinesCompanies in 1896.In 1911 , this company became theComputing Tabulating RecordingCompany and now the InternationalBusiness machines, simply IBM.
    • Digital EraClaude ShannonHe suggested 1’sand 0’s of binarysystems can beconsidered ‘ON’ andOFF position of theflow of current.
    • Dr. John Vincent AtanasoffHe built the firstelectroniccomputer namedAtanasoff BerryComputer.
    • J. Presper Eckert andJohn William MauchyThey developed generalpurpose computer,Electronic NumericalIntegrator and Calculator(ENIAC).This computer has 1800valves consuming 100kilowatts of power andweighed several tons.
    • John Von NeumanHe introduced anidea of entering theprogram of instructionsinto the machines forits procedures as thenumerical data isentered.
    • Admiral Grace HopperShe developed thisidea and it wasdesigned and built byMauchy and Eckert. Thefirst commercialelectronic digitalcomputer capable ofusing stored programswas called UniversalAutomatic Calculator(UNIVAC).
    • TransistorsIn 1947, computersentered a secondgeneration by theintroduction oftransistors.It was developed bythe American physicistWilliam Shockley.