IBM 602-A Wiring Diagram

Source: IBM 602-A Principles of Operation, 22-5489-10 (1955).

An IBM 602-A control panel wired for crossfooting, a once-common term meaning to total the columns and rows in books of accounts, and used by scientists when building tables by differencing. Click on the graphic to expand to full size.

Frank da Cruz / / Columbia University Computing History