We’re used to seeing all manner of seven-segment displays ... [Dave]’s take on this theme started by building his display from laser-cut plywood pieces, which is a nice choice because of ...

The video below shows the display being put through its paces, and when the clock rate ramps up, the rhythmic pulsations of the relays driving the seven-segment flip displays is hypnotizing.

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 ...