[GreenKeys] Interesting device may be available

[Jim Haynes]

You have a Bell System unit.  Could have been used for answerback on a
RO machine, or before the answerback mechanism was developed for the
28 KSR keyboard.  Using a stepping switch wired to generate the
characters.

One non-Bell use of this I know of was in the Burroughs 220 computer,
which used a 28RO as the console printer.  There were a bunch of relays
to translate the internal computer code to a 5-level code and then the
distributor (LD) sent that to the printer.  The resulting code was not
Baudot.  The type box and function bars were coded for the particular
code Burroughs wanted.

On the later B5500 computer they used a Model 33 as the console machine.
(After using some company's electric typewriter earlier)  Again the code
was not ASCII but was more like the 6 bit BCD computer codes.

jhhaynes at earthlink dot net