In electronics, a flip flop or flip-flops is a multi-contact switch with two stable states and is used as an input to store state data a non-bistible multivibrator. The flip flop can be designed to alter the state by means of signals applied to a single or more input controls and will normally have one or more outputs. When the input to a flip-flop changes, it flips the flop and a corresponding change to occur in the corresponding output. Flip-flops are used as a component in many different electronic devices, including computer chips, resistors, capacitors, sensors, switches, relays, voltage control units, diodes, and RF circuits.