Those old enough to have encountered punch cards in their lifetime are probably ... they’re a great tool to show the basics of binary data storage: the bits are easily visible and can even ...

Considering you just can’t go down to Fry’s and buy an IBM 80-column punch card reader, we’re loving [digitatrails]’ clever way of getting data off an otherwise unreadable storage medium.

(1) See loyalty punch card. (2) An early storage medium made of thin cardboard stock that held data as patterns of punched holes. Also called "punched" cards, each of the 80 or 96 columns held one ...

From punch card-operated looms in the 1800s to modern cellphones, if an object has an "on" and an "off" state, it can be used to store information. In a computer laptop, the binary ones and zeroes ...

A paper card that encourages customers to return to a retail store. The size of a credit card, a loyalty punch card has a series of boxes that are punched or stamped by the cashier at time of ...