[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
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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