Front panel switches - what did they do?

Swift Griggs swiftgriggs at
Tue May 24 13:58:29 CDT 2016

On Tue, 24 May 2016, Marc Howard wrote:
> Those aren't LED's on the Apollo display.  They are EL's (Electro 
> Luminescent displays).  Each segment of each digit was controlled by a 
> relay.  They astronauts eventually got use to the tinkling sound of the 
> relays.

Is that the same as the EL that was used in the 1980's on lots of old 
stereo gear ? Ie.. you'd hit rewind and some little backlit 
glass-and-silkscreen template would say "Rewind" in blue or green or etc..

I LOVE the way that looks. That's one of the reasons why I love the Amiga 
CD32 (not that I own one.... yet). It looks like a hifi stereo component 
from the 1980s. I have a Kenwood electronic EQ and spectrum analyzer that 
has all kinds of EL elements on the front of it. I still use it daily. 
It's awesome. 


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