Columbia University Computing History   

The IBM 2540 Reader Punch

IBM 2540
Photo: Introduction to IBM Data Processing Systems, IBM Textbook C20-1684, 1968.

The IBM 2540 card reader (right) and punch (left), 1965.

References
Columbia University Computing History Frank da Cruz / fdc@columbia.edu This page created: January 2001 Last update: 28 March 2021