In which case, this paper clip and metal tape punch card reader might be just the thing you need. Built as part of the educational outreach efforts of the MakeICT hackerspace, this project allows ...

An 11-punch with a digit indicated a negative number ... We occasionally see new card readers. They rarely, though, work with standard cards.

Punch cards were fed into computers by card readers. Punch cards were synonymous with data processing for about 80 years. Concepts were simple: the database was the file cabinet; a record was a ...

Now consumers can "collect" merchant cards (punch cards) and see how they are ... more active than merchants who use the Square Card Reader: Register users are five times more active every week ...