Front panel switches - what did they do?
wh.sudbrink at verizon.net
Tue May 24 11:48:24 CDT 2016
Swift Griggs wrote:
> Machine Language Using a Program Listing Using Toggle Switches". That's
> pretty hard core. I'm surprised they didn't at least use component
> displays with LEDs to show the values rather than reading it straight
> off some blinkenlights.
It's much easier to tell if you have a stuck bit
(data or address) with simple LEDs. This was (and is)
a real possibility in old machines. Trying to watch
for patterns of HEX or OCT digits to provide the same
info would be really tough.
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