PIC 18F2550
This is an amazing MCU that can talk directly to your PC' s USB port.
The 18F2550 has 16k of program memory and can crunch 12MIPs from an externally mounted 4Mhz crystal.
If you' re looking for simple to use ' power in a chip' , this is it.
Implements full USB 2.0, and can be programmed in