In 1880s, Herman Hollerith designs a system to record census data . The information is stored as holes in cards, which are interpreted by machines with electrical sensors. Hollerith starts a company named Tabulating Machine company that will eventually become IBM(International Business Machine), which is by far the most popular personal computer manufacturer . Hollerith proposed a mechanized method to count the cencus, which was based on punched cards. The cards were punched by a machine called Punched Card Machine.Wednesday, November 18, 2009
Punched Card
In 1880s, Herman Hollerith designs a system to record census data . The information is stored as holes in cards, which are interpreted by machines with electrical sensors. Hollerith starts a company named Tabulating Machine company that will eventually become IBM(International Business Machine), which is by far the most popular personal computer manufacturer . Hollerith proposed a mechanized method to count the cencus, which was based on punched cards. The cards were punched by a machine called Punched Card Machine.
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