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  2. Computer programming in the punched card era - Wikipedia

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

    Depending on the programming language, debugging output statements could be quickly activated and "commented out" by using cards with such statements punched with the comment character (e.g., 'C' in Fortran) in column 80 of the card; turning the card end-for-end would put the 'C' in the leading column, which transformed the now backwards card's ...

  3. Punched card - Wikipedia

    en.wikipedia.org/wiki/Punched_card

    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 .

  4. Punched card input/output - Wikipedia

    en.wikipedia.org/wiki/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 computer card punches and ...

  5. Character encoding - Wikipedia

    en.wikipedia.org/wiki/Character_encoding

    Hollerith 80-column punch card with EBCDIC character set. Herman Hollerith invented punch card data encoding in the late 19th century to analyze census data. Initially, each hole position represented a different data element, but later, numeric information was encoded by numbering the lower rows 0 to 9, with a punch in a column representing its ...

  6. Presentation - Wikipedia

    en.wikipedia.org/wiki/Presentation

    A presentation program is commonly used to generate the presentation content, some of which also allow presentations to be developed collaboratively, e.g. using the Internet by geographically disparate collaborators. Presentation viewers can be used to combine content from different sources into one presentation.

  7. The #1 Best Way To End a Card, According to Psychologists

    www.aol.com/1-best-way-end-card-231500500.html

    The most important factor to remember is the intent of the card. "The words you use to end a card can evoke emotion as well as express intention toward a response," says Natalie Bernstein, Ph.D ...

  8. Category:Punched card - Wikipedia

    en.wikipedia.org/wiki/Category:Punched_card

    This category contains articles about punched cards and card handling equipment, including card readers, card punches, and keypunches. Subcategories This category has the following 2 subcategories, out of 2 total.

  9. Talk:Punched card - Wikipedia

    en.wikipedia.org/wiki/Talk:Punched_card

    They may have had fewer punched-card-related tasks, as a given processing task may only have involved the computer rather than, for example, a card sorter and an accounting machine - or a card sorter and an older computer that read a full card deck and sort the data itself - and the operator wouldn't have to change the plugboard or load ...

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