Small microcontrollers
68HC11
- basic microcontroller with simple instruction set
- full-featured (many of the same features as larger microcontrollers)
- good real-time capabilities
- A/D conversion built-in
- cheap
- very common (lots of resources available including on web)
- public domain C compiler available
- evaluation board with debugging support (BUFFALO ROM)
PIC (Microchip)
- small footprint (as few as 24 pins)
- no external system bus
- lots of members of family differentiated by I/O pin capabilities
- A/D, serial I/O, interrupts, input capture, etc.