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John Napier invented a device called Napier's rods or bones that shows his cretiveness in the field of mathematics
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Blaise Pascal invented the "Pascaline", precursor of modern calculator. It allows you to add and subtract numbers consisting of up to twelve digits
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Charles Babbage made a small calculator that could perform certain mathematical computations to eight decimals
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Ada Lovelace published an articola in an English science journal, where she described haw codes could be created for the device to handle letters and symbols along with numbers
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Herman Hollerith devised a System of encoding data on cards by means of puched holes. Hollerith's machine was used for calculating statics and sorting information
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Hollerith set up the Tabulating Machine Company
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The Machine Company became International Business Machines Corporation
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Two american engineers designed ENIAC (Electronic Numerical Integrator and Calculator)., the first general-purpose electronic computer. It was large,stand-alone machine operated with punched-card programs
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America engineer Marcian Hoff built the first microprocessor combining all the basic elements of a computer on one tiny silicon chip
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Bill Gates and Paul Allen founded MIcrosoft
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Microsoft released the DOS (Disk Operating System) for the IBM PCs
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Windows borrowed ideas from Apple's GUI system and rapidly became the leading operating system worldwide