Standards
- ANSI INCITS 21-1967 (R2002), Rectangular Holes in Twelve-Row Punched Cards (formerly ANSI X3.21-1967 (R1997)) Specifies the size and location of rectangular holes in twelve-row 31⁄4-inch-wide (83 mm) punched cards.
- ANSI X3.11 – 1990 American National Standard Specifications for General Purpose Paper Cards for Information Processing
- ANSI X3.26 – 1980/R1991) Hollerith Punched Card Code
- ISO 1681:1973 Information processing – Unpunched paper cards – Specification
- ISO 6586:1980 Data processing – Implementation of the ISO 7- bit and 8- bit coded character sets on punched cards. Defines ISO 7-bit and 8-bit character sets on punched cards as well as the representation of 7-bit and 8-bit combinations on 12-row punched cards. Derived from, and compatible with, the Hollerith Code, ensuring compatibility with existing punched card files.
Read more about this topic: Punched Card
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—New Yorker (April 23, 1990)
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—Henry David Thoreau (1817–1862)