Similar to the symbolics keyboard. Made by Microswitch, I believe. Very old (Like '82 or so?), a million modifiers, etc. The "Knight Keyboard" is older, though. Pretty easy to find more info on google: The space cadet had a bit of a following, so information is abundant.
You sure? Emacs was created in the 1976, and was inspired by the space cadet keyboard. Logic would insist the space cadet keyboard would pre-date (or co-date?) this.
I'm not old enough to know for sure, but wikipedia says the knight keyboard is older. More importantly, the jargon file agrees:
http://catb.org/~esr/jargon/html/S/space-cadet-keyboard.htmlIt's hard to find real dates on the space cadet keyboard, though. All I know is that Webwit's appears to be from 1982 (hence my post). Interestingly enough, the controller chip on the space-cadet keyboard is programmed in lisp.
According to the following lisp machines were only made in 1977 or so (date of the CADR. The first prototype was '75)
http://www.andromeda.com/people/ddyer/lisp/According to Wikipedia emacs was ported to CADR (Second lisp machine after CONS) from ITS in 1975. (Which is interesting, because the emacs page says 1976 was he initial release)
Having now looked, it's surprisingly difficult to get dates on all this stuff. Basically the only source with dates is that above-linked history of lisp machines. There's no date on the keyboards as far as I've seen (Except internally, but there aren't enough internal pictures)