Digital Logic
Sequential Circuit
A circuit whose output depends on both current inputs and past history, incorporating memory elements.
Detailed Explanation
Sequential circuits have state—flip-flops or latches that remember previous inputs. Output depends on the current state and inputs. State transitions occur on clock edges in synchronous sequential circuits.
All practical digital systems are sequential—purely combinational circuits have limited use. FSMs, counters, registers, and memories are sequential circuits. Sequential circuits are described by state diagrams or state tables.