The punched card - IBM
The 1935 Social Security Administration contract required millions of IBM punched cards and tabulating machines to process data and print checks. IBM’s Fred M. Carroll developed a series of high-speed rotary presses that …
Punched card - Wikipedia
The IBM 029 Card Punch - Two-Bit History
2018年6月23日 · One of the most widely used card punch machines was the IBM 029. It is perhaps the best remembered card punch today. The IBM 029 was released in 1964 as part of IBM’s System/360 rollout.
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Punched card input/output - Wikipedia
IBM Punch Cards - Columbia University
Until the mid-1970s, most computer access was via punched cards. Programs and data were punched by hand on a key punch machine such as the IBM 026 and fed into a card reader like the IBM 2501. Large computing sites such as …
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The IBM 026 Key Punch - Columbia University
An expert key punch operator in data-entry applications, with the aid of a well-designed program card, could punch 200 cards per hour. There was a huge market for key punch operators in the 1950s and 60s.
The punched card tabulator | IBM
The Hollerith Printing Tabulator and Summary Card Punch from 1929. An electrical counting machine automated data handling, transformed industries, and became the basis for a highly profitable new company called IBM.
The IBM 029 Key Punch - Columbia University
2024年6月28日 · The IBM 29 Card Punch (also called the 029 or Type 029 Key Punch or Keypunch), introduced about 1964 to coincide with the introduction of the IBM 360. Available in nine models with various combinations of keyboard …
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