We’re used to seeing all manner of seven-segment displays ... have in common is that they’re, you know, displays. Using them as inputs would just be crazy talk, right? [Dave]’s take on ...

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 ...