Latches
A latch is a type of circuit element used in sequential logic to store the state at a given moment. It is an electronic device that can maintain a state and later release the stored state. Latches are used in many types of digital circuits, particularly those that require the device to remember and maintain a particular state over a period of time. A latch can be thought of as a basic version of a flip-flop, where the output of the device depends on the prior state. Latches also avoid the problem of random fluctuations, or "glitches", that can occur in a flip-flop, and thus improve the reliability of the circuit.