So if you have a 64K x 8 RAM array filled to the brim with 65,536 of your favorite bytes and you turn off the power to it, what happens? All the electromagnets lose their magnetism and with a loud thunk, all the relay contacts return to their untriggered states. And the contents of this RAM? They all go POOF! Gone forever. This is why random access memory is also called volatile memory. It requires a constant supply of electricity to retain its contents.
