These are infamously known as hanging chads. The reader is made up of a ... OK, now that you’ve got a punch card reader and writer, what do you do with it? Password storage comes to mind.

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 ...

(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 ...

This adorable DIY punch card activity, which I discovered on Instagrammer Emilia Marie's (@emiliamariehome) feed, is a great way to create an easy plan to stay motivated. Plus, it's a fun craft to ...

“What’s more motivating than a punch card?” That’s the simple idea behind a recent so-called punch party that creator @emiliamariehome hosted with friends. On January 24, @emiliamariehome ...

A punch-card data entry machine. A deck of blank cards was placed into a hopper, and, upon operator command, the machine fed one card to a punch station. As characters were typed, a series of dies ...