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Date   : Thu, 11 Oct 1984 12:18:00 GMT
From   : bower@dca-eur.ARPA
Subject: Help with Hall-Effect

Date: 11 Oct 1984 12:04:09 Z
Text: Excuse the media, only have access to this net.  Query for hardware
information...

   I obtained a surplus keyboard a while back that has the most fantastic
feel and layout of any that I have experienced to date.  In attempting to
use it in a new construction project, however, I discoverd that it uses
Hall-Effect switches.  Being stationed in Germany, I have been unable to
locate any information on how to build an encoder, or even the theory of
operation for these little beasts.

   Any information on these switches would be appreciated, to include
addresses of OEMs.  The particular unit in question was manufactured by
Microswitch, but the letter I mailed five months ago (which included a
SASE) was never answered.  The mail over here is slow, but I must conclude
that they will not respond.

   I would appreciate any info, to include deep "tech talk".  Have been
homebrewing computers for over 8 years.

   Thanks in advance.
                         Hal
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