ADM-3A Terminal

By Xah Lee. Date: . Last updated: .

ADM-3A Terminal, first shipped in 1976.

This is the machine that begot the vi editor.

terminal ADM-3A
The ADM-3A terminal. (12 inch screen; 24 lines of 80 characters.) 2676ร—2370 [ ]
terminal ADM-3A keyboard
Terminal ADM-3A keyboard.
terminal ADM 3A number pad
Terminal ADM-3A number pad.


adm-3a keyboard cb140
ADM-3A keyboard [image source]

Interesting notes:

ADM 3A terminal layout 6aec4
The ADM-3A terminal keyboard layout.

This machines is how vi's key began, see History of vi Keys

HJKL keys and vi

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