Seven-segment displays are ubiquitous ... We’re all familiar with their classic visage; slightly italicized numbers that are brought to life by LEDs. There are a boatload of variants available ...

We all know and love the humble seven-segment display, right? And if you want to make characters as well as numbers, you can ...

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 ...