Columbia University Computing History   

IBM 604 Control Panel

The control panels of the IBM Type 604 Electronic Calculating Punch and the Type 521 Punch Unit. Click on diagram to magnify to full size.
IBM 604 control panel
IBM 604 control panel; Source: IBM 604 Manual of Operation, 22-5279-9 (1954).
Columbia University Computing History Frank da Cruz / fdc@columbia.edu This page created: January 2001 Last update: 4 April 2021