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- Computer_programming_in_the_punched_card_era abstract "From the invention of computer programming languages up to the mid-1980s, many if not most computer programmers created, edited and stored their programs line by line on punched cards. The practice was nearly universal with IBM computers in the era. 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. Users could create cards using a desk-sized keypunch with a typewriter-like keyboard. A typing error generally necessitated repunching an entire card. In some companies, programmers wrote information on special forms called coding sheets, taking care to distinguish the digit zero from the letter O, the digit one from the letter I, eight from B, two from Z, and so on. These forms were then converted to cards by keypunch operators, and in some cases, checked by verifiers. The editing of programs was facilitated by reorganizing the cards, and removing or replacing the lines that had changed; programs were backed up by duplicating the deck, or writing it to magnetic tape.".
- Computer_programming_in_the_punched_card_era thumbnail Bundesarchiv_B_145_Bild-F031434-0006,_Aachen,_Technische_Hochschule,_Rechenzentrum.jpg?width=300.
- Computer_programming_in_the_punched_card_era wikiPageExternalLink fisk.pdf.
- Computer_programming_in_the_punched_card_era wikiPageExternalLink ssio.html.
- Computer_programming_in_the_punched_card_era wikiPageExternalLink pcdpp.
- Computer_programming_in_the_punched_card_era wikiPageID "7380371".
- Computer_programming_in_the_punched_card_era wikiPageRevisionID "606099608".
- Computer_programming_in_the_punched_card_era hasPhotoCollection Computer_programming_in_the_punched_card_era.
- Computer_programming_in_the_punched_card_era subject Category:Computer_programming.
- Computer_programming_in_the_punched_card_era subject Category:History_of_software.
- Computer_programming_in_the_punched_card_era comment "From the invention of computer programming languages up to the mid-1980s, many if not most computer programmers created, edited and stored their programs line by line on punched cards. The practice was nearly universal with IBM computers in the era. 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. Users could create cards using a desk-sized keypunch with a typewriter-like keyboard.".
- Computer_programming_in_the_punched_card_era label "Computer programming in the punched card era".
- Computer_programming_in_the_punched_card_era sameAs m.025_ycx.
- Computer_programming_in_the_punched_card_era sameAs Q5157567.
- Computer_programming_in_the_punched_card_era sameAs Q5157567.
- Computer_programming_in_the_punched_card_era wasDerivedFrom Computer_programming_in_the_punched_card_era?oldid=606099608.
- Computer_programming_in_the_punched_card_era depiction Bundesarchiv_B_145_Bild-F031434-0006,_Aachen,_Technische_Hochschule,_Rechenzentrum.jpg.
- Computer_programming_in_the_punched_card_era isPrimaryTopicOf Computer_programming_in_the_punched_card_era.
