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.

Keyboard

adm-3a keyboard cb140
ADM-3A keyboard [image source https://vintagecomputer.ca/lear-siegler-adm-3a-terminal/]

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

DP2880486F_ADM3A_UM_Apr86.pdf

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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