But LEDs are far from the only way to run a seven-segment display — check out this mechanical seven-segment display for proof of that. We’ve been seeing a lot of mechanical seven-segment ...

seven-segment display (Image courtesy of LXD, Inc.) In their natural state, liquid crystals line up with the orientation "rubbed" into the front and rear glass panels. The rubbings are microscopic ...

The Numitron is simply a seven-segment display built from light ... Well, [Alec] has a bone to pick with this technology. The displays were quite dim, poorly assembled, and not very pleasing ...