[time-nuts] Best Nixie clock, ever.

Poul-Henning Kamp phk at phk.freebsd.dk
Thu Dec 15 17:56:11 EST 2005


In message <43A1CBFB.9030608 at dakotacom.net>, David Forbes writes:

>For example, HP used a 4-bit BCD counter to drive 8 neon bulbs, then 
>made a BCD-to-decimal decoder from a hybrid photoresistor network to 
>drive the nixie cathodes. The German fellow used tubes to do the 
>BCD-to-decimal decoder.

That's mentioned in the german text actually.

But for a clock driving nixies I think I would have used ring-coutners,
that way there is no decoding step so less tubes should be needed
overall. 

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
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