Flip-Flops

Flip-Flops are components which remember their last logic state even after the input signal disappear. It's actually a very small capacity Memory Components usually for one bit.It can be used for instance in order to stabilize a mechanic switch status at the moment that it changes his status from "open" to "close" and the opposite.

There is some kinds of Flip-Flops like the D Flip-Flops, the JK Flip-Flops and so forth.