A CDE Definition
A punch-card data entry machine. A deck of blank cards was placed into a hopper, and, upon operator command, the machine fed one card to a punch station. As characters were typed, a series of dies at the punch station punched the appropriate holes in the selected card column.
The First One
The first automatic data processing system. Developed by Herman Hollerith, a Census Bureau statistician, the machine was first used to count the U.S. census of 1890. It was so successful that Hollerith later formed the Tabulating Machine Company and sold his machines throughout the world for a variety of accounting functions. In 1911, his company merged with another company that was later renamed IBM. Following is the sequence of steps used to count the 1890 census. See punch card.
What a Concept!
Hollerith's Card Punch
The Punch Card Reader
The Hollerith System
High Tech in 1890
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