http://ubasics.com/adam PIC
uControllers, DMX-512, Phase Controlled light dimming, Rotary encoders, and
a very little bit on TI graphing Calculators and power supply stuff.
Ken Websters PIC16C74 serial port multiplexer. This
includes a complete SRAM interface and a packet system with addressing, control,
checksums, etc... Actually almost a network (OSI 3) system.