ADM-3A Terminal, first shipped in 1976.
This is the machine that begot the vi editor.
- 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.
This machines is how vi's key began, see History of vi Keys