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  The Abacus is an instrument used to perform arithmetic calculations.
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  A punch cars is a card perforated according to a code, for controlling the operation of a machine.
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  Considered the first computer, designed and partly built by the English inventor Charles Babbage in the 19th century.
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  It stands for Electronic Numerical Integrator And Computer.
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  more aboutThe Von Neumann arch is a design of computer system with three different entities: a processing unit, an i/o unit and a storage unit.
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  A computer programming language that is not limited by the computer and easy to understand.
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  UNIVAC is short for Universal Automatic Computer made by J. Presper Eckert and John Mauchly.
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  Professor Richard Mattessich pioneered the development of computerized spreadsheets for use in business accounting
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  UNIX is a widely used multiuser operating system.
 UNIX Wiki Page
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  A PC is a computer used for general purposes.
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  The Altair was the first personal computer to attract many users.
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  Windows PageMicrosoft was founded by Paul Allen and Bill Gates.
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  Apple HomepageApple is a brand of electronics founded by Steve Jobs.
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  CRAY-1 Wiki PageCRAY-1 is known as one of the most successful supercomputers in history.
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  AppleMacintosh is a popular model of computer that was made by Apple.