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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 ...
Others in the series included the IBM 513 & IBM 514 Reproducing Punch. The 519, which was "state of the art for the time", [1] could: reproduce all or parts of the information on a set of cards "gangpunch" - copy information from a master card into the following detail cards; print up to eight digits on the end of a card; compare two decks of cards
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 ...
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 ...
Permuterm is known as one of the first successful punch card indexing systems, and is still referenced today in the data indexing field. Ohlman published a variety of papers on Permuterm and other Information Science and Technology and communication topics, which are now at the Charles Babbage Institute at The University of Minnesota.
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 .
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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