Best keyboards you've used ever!

From: Paul Koning <pkoning_at_equallogic.com>
Date: Mon Aug 30 16:15:33 2004

>>>>> "Brent" == Brent Hilpert <hilpert_at_cs.ubc.ca> writes:

 Brent> Speaking of various keyboards: some time ago I received a bare
 Brent> (no machine, no case, no ID) keyboard utilising
 Brent> magnetically-activated reed relays for the key contacts. Reed
 Brent> relays were commonly used for calculator keyboards in the
 Brent> late-60s/early 70s and it probably dates from this era, but
 Brent> this is the only occasion I have seen reed relays used in an
 Brent> alphabetic keyboard.

PLATO 3 used reed switches, and I believe PLATO IV did likewise.
Liquid proofing is clearly a good reason: those systems were intended
for use by students (of all ages) and were certainly likely to have
beverages spilled on them. Because of how they were built, a good
scrub under hot water would fix them right up.

      paul
Received on Mon Aug 30 2004 - 16:15:33 BST