What is multyplexing?

Answer 1

Multiplexing is a term used to suggest time sharing of attention / operation, allowing multiple processes to be done, apparently at once. In electronics, a multiplexing system allows a processor / system to control or operate a larger group of devices by sharing the time each of the latter is addressed. An analogy would be the plate spinning act in a circus. The performer runs from plate to plate, giving each a spin on it's pole before running to the next one. Memory devices are multiplexed, to allow the central processing unit (CPU) to access many millions of locations when needed.