On Wednesday, December 17, 2025 at 2:29:51 PM UTC-5 Mac Doktor wrote:
Oh, the humanity. Mine is intact and running. https://www.astarcloseup.com/2019/05/systron-donner-8350-readergenerator.html Someone is fixing the broken switch caps for me. I loved the nasa-style illuminated push buttons and thumbwheel switches for setting the time. That's the rare part. The prongs on a couple of mine broke. I need to contact Sam to see if he's settled in for the winter and can fix them. Does anyone know where to obtain the light bulbs in them? I do NOT want LEDs in there. On Dec 17, 2025, at 2:16 PM, Leroy Jones wrote: What all does "Colossus" do? "This is the voice of World Control." "Man is his own worst enemy." My favourite evil computer movie ;-) When I bought that Systron Donner timer in the 90's gear like that was all over the place and basically being sold for gold scrap. I had always loved nixies since I was a kid and my father's friend worked at Burroughs - I got to visit his office a few times and play with the punch card terminals... That was where I first saw the neon tubes and it was burned into my memory. Later when I had the resources to build a clock for myself the easiest thing to do was just get something already functioning because I had no idea how to wire them. In hindsight, I would have preferred to have saved the original gear... but such is life and at least the boards live on. Speaking of which - I had never neard of DTL (Diode-Transistor-Logic) until I started reverse engineering the circuits - they looked like TTL chips, but were a generation prior technology. Interesting. And yes - there is a place for LED's, but it's not in those switches! -- 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, visit https://groups.google.com/d/msgid/neonixie-l/14a4c8e6-f13b-4b22-a1f0-44120ab57ea7n%40googlegroups.com.
