I guess my phone has the same 12am error then, im pretty sure that 12am is correct as stupid as it is.
On Fri, May 21, 2021, 4:58 PM Jeff Walton <[email protected]> wrote: > I designed a nixie about 50 years ago that used all 74xx logic and a few > discrete transistors. It was wired point-to-point to the IC’s (no sockets) > and it ran for 35+ years. The only logic mistake that I made was that I > did the AM/PM indicator and was all proud of it and someone pointed out to > me that PM changes to AM at midnight, not 1 AM. It was going to require > all new logic and I never changed it but it sure was unique. I used mains > frequency division and a 74123 as a monostable-one shot timer for the input > to the frequency counter to eliminate line noise. That resolved all of the > noise issues, which were a real pain until I did that. > > > > It was a wonder that I didn’t damage the ICs by soldering directly to the > pins and using old telephone twisted pair wires for the connections. I was > a poor college student and scrounged everything I could find… > > > > Jeff > > > > > > > > > > *From:* [email protected] *On Behalf Of *newxito > *Sent:* Friday, May 21, 2021 1:49 PM > *To:* neonixie-l <[email protected]> > *Subject:* [neonixie-l] logisim-evolution > > > > I always wanted to design a nixie clock that uses just 74xx ICs. I know > that there are some schematics available but just copying a design is not > fun. > > Recently, I watched a video from CouriousMarc with an intro to a digital > logic circuit simulation software called logisim-evolution. I think that > will be a big help, the software looks great! > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/67428246-9640-41f0-af09-5c281c524554n%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/67428246-9640-41f0-af09-5c281c524554n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/026e01d74e84%2419f58790%244de096b0%24%40gmail.com > <https://groups.google.com/d/msgid/neonixie-l/026e01d74e84%2419f58790%244de096b0%24%40gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAPDJQ6A11yM6bniBD1nyZXSEanPTY_9wA08%3D-%2B684pbGBNuM%3Dw%40mail.gmail.com.
