Card from a Card-Capacitor Read-Only Store (CCROS), System/360 Model 30
Catalog Number
102630209
Type
Physical object
Description
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.