Card from a Card-Capacitor Read-Only Store (CCROS), System/360 Model 30
International Business Machines Corporation (IBM)
In upper left corner
overall: 1/8 in x 7 1/4 in x 3 1/4 in
This is an example of the "information document" that would be used to store information in an IBM Printed Card CROS unit. The information document was the same size as a standard IBM punched card so that it could be prepared by using a standard keypunch machine to punch the holes used to code data on the card.