The Propeller microcontroller has 8 cores, and so can do multiprocessing, also called true multitasking. The cores are all the same. It has 32 I/O pins, which are also all the same. Each core can work with every I/O pin. This means that all of the Propeller cores and I/O pins are equally good at any tasks they must perform. Each core has a bit of its own memory. Each core also takes turn accessing a larger Main Memory, where they can share information.