Old ICL mainframe keyboard

From: Andy Holt <andyh_at_andyh-rayleigh.freeserve.co.uk>
Date: Fri Nov 22 01:20:00 2002

> Anyone got any memories or info on an early to mid 70s ICL mainframe that
> required a big keyboard known as the 7181/9? I've got one and I'm sure it
> was used on the 2900 mainframes and maybe earlier - big desk console types
> with built-in monitor but free standing keyboard......

We never used those particular devices at our installation, but I did see
some info on them (I think there was also a 7184 of similar nature).

These were synchronous, block transmission terminals - a screenful of
information was sent at a time (either system -> terminal or terminal ->
system). Used on the 1900 series and perhaps 2900s. Normally connected via a
7900 series communications processor (better known as a PF56), but some of
the last smaller 1900s (1901T & 1902T) had a built-in adaptor.

Andy
Received on Fri Nov 22 2002 - 01:20:00 GMT