[Alec] at Technology Connections has a bit of a love/hate relationship with these displays. The Numitron is simply a seven-segment display built from light bulb filaments. The filaments run at 5 V ...

One of those is the magic of “twinkling” light sets, which [Alec Watson] explains in a Technology Connections video. Everyone has seen bulbs that flash, and strings that dim. But the twinkle ...