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 MathematicianHis theory of Booleanlogic becamefundamental to thedesign of computercircuitry.
Dr. Herman HollerithHe 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 ShannonHe suggested 1’sand 0’s of binarysystems can beconsidered ‘ON’ andOFF position of theflow of current.
Dr. John Vincent AtanasoffHe built the firstelectroniccomputer namedAtanasoff BerryComputer.
J. Presper Eckert andJohn William MauchyThey developed generalpurpose computer,Electronic NumericalIntegrator and Calculator(ENIAC).This computer has 1800valves consuming 100kilowatts of power andweighed several tons.
John Von NeumanHe introduced anidea of entering theprogram of instructionsinto the machines forits procedures as thenumerical data isentered.
Admiral Grace HopperShe developed thisidea and it wasdesigned and built byMauchy and Eckert. Thefirst commercialelectronic digitalcomputer capable ofusing stored programswas called UniversalAutomatic Calculator(UNIVAC).
TransistorsIn 1947, computersentered a secondgeneration by theintroduction oftransistors.It was developed bythe American physicistWilliam Shockley.