The IBM 2741 Terminal



The IBM 2741 was a Selectric typewriter embedded in a small-desk-size cabinet crammed with electronics and wire bundles, communicating at 134.5 bits per second, half duplex. When it was the computer's turn to transmit, it physically locked the keyboard. The print element (not visible in this photo) resembled a golf ball, and was replaceable with other Selectric balls -- italics, APL, and so on. Date: About 1965.


Most recent update: Mon Sep 24 16:05:02 2007

Frank da Cruz / / Columbia University Computing History / Jan 2001