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.) 2676×2370image source
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.

ADM-3A says to vi: I am your father

This machines is how vi's key began, see

See History of Emacs and vi Keys

Adm3a Operators Manual


Hacker Lore Keyboards

  1. IBM Selectric
  2. History of Emacs and vi Keys
  3. Apple Keyboard History ⌨
  4. Space-Cadet Keyboard
  5. ADM-3A Terminal
  6. DEC VT100 Terminal
  7. IBM Model M keyboard
  8. Sun Microsystems Type 6 Keyboard
  9. Control Key and Capslock Key Positions in Old Keyboards
  10. The Idiocy of Happy Hacking Keyboard

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