We’ve been displaying numbers using segmented displays for almost 120 years now, an invention that predates the LEDs that usually power the ubiquitous devices by a half-dozen decades or so. But LEDs ...

There’s a long history of devices originally used for communication being made into computers, with relay switching circuits, vacuum tubes, and transistors being some well-known examples. In a smaller ...

Electrochromic materials are the key to low-cost simple displays, according to Swedish firm Rdot Displays, which claims wide viewing angles and high contrast for its reflective technology. Update 2021 ...