XXXX Circuit 25 - IBM CRT 3270 ..age 32 to age 70

IBM 3270 - Wikipedia

https://en.wikipedia.org/wiki/IBM_3270

Jump to Displays - 3277 model 1: 40×12 terminal; 3277 model 2: 80×24 terminal, the ... A version of the IBM PC called the 3270 PC, released in October ...

‎Principles · ‎Applications · ‎Models · ‎Technical Information

Introduction to the 3270 terminal - IBM

https://www.ibm.com/support/knowledgecenter/zosbasics/...ibm.../znetwork_261.htm

A 3270 terminal was a non-programmable (sometimes called "dumb") workstation. Stated more simply, it was a display screen with a keyboard attached; see ...

IBM 3270 Information Display System

https://www.ibm.com/support/knowledgecenter/en/SSL28L_1.1.0/.../sdv3270.html

WSim simulates a 3270 terminal by maintaining an updated buffer or screen image for the terminal. The buffer can be modified by generated messages or by ...