What is the Nixie Tube?
If you have a digital alarm clock or a timer on a microwave oven, VCR, or DVD player, chances are it has blue-green numbers, in which case it’s using a VFD (vacuum florescent display) or red ones, which means it’s made from LEDs (light-emitting diodes). Either way, you’ll notice that it displays each of the digit in the time (10:30 or whatever) by lighting up a pattern of seven quite separate bars, commonly called “segments”. You can write all the numbers from 0 to 9 with a seven-segment display and quite a few letters and words as well. Continue reading “How Nixie Tubes works”