Punched card. An 80-column punched card of the type most widely used in the 20th century. The size of the card was 7 3⁄8 in × 3 1⁄4 in (187.325 mm × 82.55 mm). This example displays the 1964 EBCDIC character set, which added more special characters to earlier encodings. A punched card, punch card, IBM card, or Hollerith card is a piece of stiff paper that contained either commands for controlling automated machinery or data for data processing applications. Both commands and data were represented by the presence or absence of holes in predefined positions. Reading punch cards with an Arduino and digital camera. DIY Drones. Festival of Post-Digital Culture. Instructables - Make, How To, and DIY. Online Search Tools.
Arduino. Ipad. Camera. Scanner. 3d printer. Kinect.