Lisp Machine Keyboards
To understand the history of lisp machine keyboards, you must know some history of lisp machines.
Lisp Machines are computers (hardware) designed to run lisp programing language efficiently.
- CONS machine. First lisp machine. At MIT.
- 1974. CADR machine. 2nd generation of CONS. 25 prototype were sold.
- 1981. Symbolics LM-2, commercial version of CADR. About 100 are made.
- 1981. LMI-CADR, commercial version of CADR by LMI (LMI is Lisp Machines Inc).
- 1983. Symbolics 3600.
- 1983. LMI-LAMBDA (about ~200 sold).
- Symbolics 3640, xl1200, MacIvory, and others.
- Texas Instruments, Explorer, MicroExplorer.
- Xerox, Innterlisp-D workstation. • Xerox 1100, Dolphin (1979) • Xerox 1132, Dorado • Xerox 1108, Dandelion (1981) • Xerox 1109, Dandetiger • Xerox 1186/6085, Daybreak
Lisp Machine pretty much stopped in 1990, due to, onset of Personal Computer that are cheaper and faster, and “AI Winter” (industry's failed expectation of AI research).
2018-07-11 Wikipedia Lisp machine
SAIL Keyboard. (SAIL = Stanford AI Lab.)
The Knight Keyboard
This is the first lisp machine keyboard, probably took inspiration from the SAIL keyboard, because the color theme, and many keys and layout, are similar.
Knight keyboard. Made around 1974. This keyboard is used for the CADR Lisp Machine (and possibly also the CONS lisp machine)
This is used by Lisp Machine Inc's LMI-CADR, around 1981 and i think also by Symbolics LM-2 lisp machine.
This is the famous Space-cadet Keyboard, year 1981.
It is the most famous lisp keyboard because its the most exotic.
Symbolics Keyboard PN 364000
This model is used with Symbolics 3600 machines. Year 1983.
Symbolics keyboard PN 365407
This model comes after the PN 364000, and is compatible to it.
This is used in Symbolics 36xx series, perhaps around 1985.
There are 3 revisions, A, B, C. Rev C had LEDs in the Caps Lock and Mode Lock keys.
Rub Out key
2017-05-18 ScottBurson wrote
On an ASR33 Teletype, backspace simply moved the carriage one character position to the left.Rubout was a different concept entirely. The ASR33 had a paper tape punch and reader. The Rubout character was 0x7F, i.e., it had all bits set. So, to “rub out” an erroneous character from the paper tape, you could back the tape up in the punch to the desired character (by pressing a button on the punch; there was no character that invoked this function) and hit Rubout; this would punch the tape at all seven holes, changing whatever character had been there to a Rubout. (The software ignored Rubout characters on input.)
When the world moved on from Teletypes, it was natural for people to want a single keystroke that meant “delete the previous input character”. But there was evidently some divergence of opinion in the industry as to whether that should be Backspace or Rubout — notwithstanding that the ASR33's concept of Rubout didn't really map at all onto the new hardware.
[2017-05-19 from https://news.ycombinator.com/item?id=14367207]
2017-05-18 kps wrote:
notwithstanding that the ASR33's concept of Rubout didn't
really map at all onto the new hardware.
If you are working with paper tape, Rubout (DEL in ASCII parlance), like every other code, advances the tape when punched. So, if the tape is a stream of characters, DEL erases the one under the cursor and leaves the cursor on the character formerly to the right. That is, Rubout/DEL is defined as a ‘forward delete’ operation, and that's something that remains useful. That leaves Backspace as the natural choice for entering ‘backward delete’ on a keyboard, at least after 1979 when you have the ANSI X3.64 escape sequences for explicitly nondestructive cursor keys. I think there's a reasonable argument for Backspace being nondestructive for overstrike effects (accents, underlining, APL, etc.), especially when received by a terminal, but I know none for changing the meaning of DEL.
Xerox 1109 lisp keyboard
This keyboard is for Xerox 1109 lisp machine. Year ~1982.
Racal-Norsk KPS-10 Lisp Prototype Keyboard
Lisp Machine Keyboard USB Driver
2018-07-12 by Mike McMahon (aka MMcM) https://github.com/MMcM/lmkbd2#space-cadet-direct
Lisp Machine Keyboards
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