The seven-segment LED display is ubiquitous. But how old do you think the fundamental idea behind it is? You nixie tube fans will be thinking of the vacuum-tube era, but a reader sent us this ...

The NanoRaptor NanoSegment implements a panel of seven-segment display modules sized at “0806 ... Each of the seven segments is a single 0201 LED. Six I/O lines and three resistors are ...

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 ...