This single digit display is an old edge-lit module that [Ty_Eeberfest] has been working with. The modules were built for General Radio Company and have a really huge PCB to control just one digit.

A new stand-alone digital voltmeter (DVM) module is designed for precision measurement applications. Employing a high-resolution A/D converter and integral multi-line character display driver ...

Recently, we published an entry-level Arduino project with a single seven-segment LED display. Although it’s an amazing DIY project, we noted that most of the readers are looking for more advanced ...