4 May
2021
4 May
'21
7:18 a.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Al Kossow via cctalk
Sent: Tuesday, May 04, 2021 9:48 AM
To: cctalk at classiccmp.org
Subject: Re: General Instruments Capacitive Keyboard Encoder
On 5/4/21 2:33 AM, Paul Birkel via cctalk wrote:
It uses individual sprung metal leaves, with the exception of the caps-lock key which has
a central LED and around that an annular square foil/pad that is in fine shape. It's
all nicely constructed; the case even includes a spray-on metallized surface that is
connected via a sprung contact to the cable shield and the switch-body retaining plate.
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I'm currently reverse-engineering an AMPEX
keyboard that uses capacitive key
switches.
did all of the square foil and foam pads disintegrate in it?