bus into the chosen RAM or I/O device.Other instructions continue with another READ memory cycle where the chosen RAM, program memory, or I/O device drives data onto the data bus while the memory data register latches that data from the data bus.

More complex systems have a multi-master bus--not only do they have many devices that each drive the data bus, but also have many bus masters that each drive the address bus.The address bus as well as the data bus in