TASBot's newest bit of game-breaking magic relies on the vagaries of the NES' DPCM (differential pulse code modulation) sound channel. This one-bit data stream was used to play extremely basic ...

The "pulse code" in PCM comes from the telephone company's method of sending a pulse or no pulse down the line. Mu-Law signals typically ride on a single 64 Kbps DS0 channel in a T1 line.

Pulse Width Modulation is definitely the preferred method of dimming an LED with a microcontroller, but we were interested in hearing about a different method called Binary Code Modulation. BCM doe… ...