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The decade of the 1980's saw an explosion in computer technology and computer usage that deeply changed society. Today computers are a part of everyday life, they are in their simplest form a digital watch or more complexly computers manage power grids, telephone ....

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.... His design of an analytical engine contained all of the necessary components of a modern computer: input devices, a memory, a control unit, and output devices. Most of the actions of the analytical engine were to be done through the use of punched cards. Even though Babbage worked on the analytical engine for nearly 40 years, he never actually made a working machine. In 1889 Herman Hollerith, an American inventor, patented a calculating machine that counted, collated, and sorted information stored on punched cards. His machine was first used to help sort statistical information for the 1890 United States census. In 1896 Hollerith founded the Tabul ....