Space-cadet, Lisp Machine Keyboards
The Knight Keyboard
One of the first Lisp Machine keyboard, called Knight keyboard.
The Knight keyboard is designed by Tom Knight, was used with the MIT-AI lab's bitmapped display system. It was a precursor to the space-cadet keyboard.
Tom Knight is an American synthetic biologist and computer engineer, who was formerly a senior research scientist at the MIT Computer Science and Artificial Intelligence Laboratory, a part of the MIT School of Engineering.
In 1967 Knight wrote the original kernel for the ITS operating system, that ran on PDP-6 and PDP-10 computers.
In 1968, Knight designed and supervised the construction of the first PDP-10 ARPANET interfaces with Bob Metcalfe.
In 1972, Knight designed one of the first semiconductor memory-based bitmap displays…
In 1974, Knight designed and implemented the prototype version of the MIT Lisp Machine processor…
Wikipedia Tom Knight (scientist)
This is the famous Space-cadet Keyboard.
For detail and much more photos, see:
Symbolics Keyboard PN 364000
This model comes after the Space-cadet keyboard.
Symbolics keyboard PN 365407 Rev C
This model comes after the PN 364000, and is compatible to it.