IBM Card Capacitor Read-Only Store (CCROS)

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  • Description
Date
1965 ca.
Credit Line
Courtesy of the IBM Corporate Archive
Copyright Owner
© International Business Machines Corporation (IBM)
Keywords
IBM System/360 (Computer); Random-access memory (ROM); Card capacitor; CCROS
Object ID
500004502

Changing a punched card in a System/360 Model 30 changed the microprogramming and therefore its overall capabilities. Changes could be done even in a customer’s office.