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  2. Punched card - Wikipedia

    en.wikipedia.org/wiki/Punched_card

    Punched card. A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card [1] or punched-card [2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines . Punched cards were widely used in the 20th ...

  3. Computer programming in the punched card era - Wikipedia

    en.wikipedia.org/wiki/Computer_programming_in...

    A punched card is a flexible write-once medium that encodes data, most commonly 80 characters. Groups or "decks" of cards form programs and collections of data. The term is often used interchangeably with punch card, the difference being that an unused card is a "punch card," but once information had been encoded by punching holes in the card ...

  4. Punched card input/output - Wikipedia

    en.wikipedia.org/wiki/Punched_card_input/output

    Punched card input/output. A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with ...

  5. Penalty card - Wikipedia

    en.wikipedia.org/wiki/Penalty_card

    Penalty cards are used in many sports as a means of warning, reprimanding or penalising a player, coach or team official. Penalty cards are most commonly used by referees or umpires to indicate that a player has committed an offence. The official will hold the card above their head while looking or pointing toward the player who has committed ...

  6. Scoring system development of badminton - Wikipedia

    en.wikipedia.org/wiki/Scoring_system_development...

    The original scoring system in badminton dates back to as early as 1873. [1] A match or rubber is decided by the best of three games. Each game is played to 15 points in the case of men's singles and any doubles games. In the case of ladies' singles, a game is played to 11 points.

  7. Badminton - Wikipedia

    en.wikipedia.org/wiki/Badminton

    Badminton is a racquet sport played using racquets to hit a shuttlecock across a net. Although it may be played with larger teams, the most common forms of the game are "singles" (with one player per side) and "doubles" (with two players per side). Badminton is often played as a casual outdoor activity in a yard or on a beach; formal games are ...

  8. Jacquard machine - Wikipedia

    en.wikipedia.org/wiki/Jacquard_machine

    The machine was controlled by a "chain of cards"; a number of punched cards laced together into a continuous sequence. Multiple rows of holes were punched on each card, with one complete card corresponding to one row of the design. Both the Jacquard process and the necessary loom attachment are named after their inventor.

  9. Keypunch - Wikipedia

    en.wikipedia.org/wiki/Keypunch

    Keypunch. IBM 026 Keypunch. Keypunch operators at work at the U.S. Social Security Administration in the 1940s. Operators compiling hydrographic data for navigation charts on punch cards using the IBM Type 016 Electric Duplicating Key Punch, New Orleans, 1938. A keypunch is a device for precisely punching holes into stiff paper cards at ...