Columbia University Computing History   

IBM 360/91 Operator Intervention Controls and Indicator Lights

IBM 360/91 control panel
IBM 360/91 control panel; source: the IBM System/360 Model 91 Functional Characteristics, GA22-6907-4 (1971).
Columbia University Computing History Frank da Cruz / fdc@columbia.edu This page created: January 2001 Last update: 3 April 2021