To punch a number on the card, a machine made a hole in one of the bottom 10 columns. So a hole in the “1” row was a 1 and a hole in the “4” row was a 4. The original cards used round ...

(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 ...

A Hackaday card, thanks to the online card punch It is hard to remember, but there was a time when cards reigned supreme. Sometimes called Hollerith cards after Herman Hollerith, who introduced ...