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Magnum One (Mid-American Digital) (Disc Manufacturing).iso
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1991-03-20
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People have always needed to keep track of information. The progress toward
the concept of a computer has extended over several centuries. One of the
earliest computational devices was the abacus, used by the Chinese since
1000 B.C. The computer concept originated when Blaise Pascal invented a
mechanical adding machine in 1642. Gottfried Leibnitz expanded the concept
in 1694 with a machine that could add, subtract, multiply, divide, and
calculate square roots. In 1822, Charles Babbage developed the difference
engine, which could compute mathematical tables. A later, more sophisticated
version, the analytical engine, designed with an arithmetic unit, punched-card
input, and external storage, could not be built for lack of parts. In the
1880's, Dr. Herman Hollerith developed a punched-card device to code data for
the United States Bureau of Census. His Tabulating Machine Company, founded in
1896 to manufacture and market punched-card equipment, later merged with
12 other companies to form International Business Machines Corporation (IBM).
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