ADM-3A Terminal
ADM-3A Terminal, first shipped in 1976.
This is the machine that begot the vi editor.
![terminal ADM-3A](iold51593/terminal_ADM-3A-s.jpg)
![terminal ADM-3A keyboard](iold51593/terminal_ADM-3A_keyboard.jpg)
![terminal ADM 3A number pad](iold51593/terminal_ADM-3A_number_pad.jpg)
Keyboard
![adm-3a keyboard cb140](iold51593/ADM-3A_keyboard_cb140.jpg)
Interesting notes:
- Note the arrow keys over H J K L
- Note the position of the Escape key.
- Note the position of Ctrl.
- Note the colon key : without needing to hold shift. That's why vi uses it.
- Note Home and ~ key. That's why a tilde
~
represent home directory in unix systems.
![ADM 3A terminal layout 6aec4](i2/ADM_3A_terminal_layout_6aec4.png)
This machines is how vi's key began, see History of vi Keys