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Napier's rod
John Napier invented a device called Napier's rods or bones that shows his cretiveness in the field of mathematics -
Pascaline
Blaise Pascal invented the "Pascaline", precursor of modern calculator. It allows you to add and subtract numbers consisting of up to twelve digits -
Mechanically calculating
Charles Babbage made a small calculator that could perform certain mathematical computations to eight decimals -
The publication of Ada Lovelace
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 -
Hollerith's machine
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 -
Tabulating Machine company
Hollerith set up the Tabulating Machine Company -
IBM
The Machine Company became International Business Machines Corporation -
ENIAC
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 -
The first microprocessor
America engineer Marcian Hoff built the first microprocessor combining all the basic elements of a computer on one tiny silicon chip -
Microsoft
Bill Gates and Paul Allen founded MIcrosoft -
DOS
Microsoft released the DOS (Disk Operating System) for the IBM PCs -
Windows
Windows borrowed ideas from Apple's GUI system and rapidly became the leading operating system worldwide