[youtube=http://www.youtube.com/watch?v=-hxZRCponks&hl=en&fs=1&rel=0][Mark Roy] designed this fine RGB LED desktop clock. It uses a PIC16F877A microcontroller and a ...

This is the desktop binary clock which [Tim the Floating Wombat ... He started by solving a few questions about the display technique. He wanted to use as few LEDs as possible.