Questions tagged [punched-cards]

Punched cards were an early method of digital computer data storage, using cards made of stiff paper with holes punched in specific locations to represent data. They could be punched manually or automatically, were generally read automatically, and commonly held up to a few hundred bytes of data each.

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Were punch-card data-processing systems susceptible to "Bobby Tables"

At least in the U.S., during the 1970s and 1980s (and likely before), many tollways and other ticket-based systems used to use publicly distributed and collected "IBM-style" punched cards ...
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How small a punched card or punched tape batch job could be?

A while ago I read a post about creating the smallest possible ELF executable doing something observable — printing the number 42, for example — which Linux could accept and execute successfuly. The ...
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