Difference between Synchronous Sequential Circuits and Asynchronous Sequential Circuits:
The difference between synchronous sequential circuits and asynchronous sequential circuits is given in table below
| Sl no | Synchronous Sequential Circuits | Asynchronous Sequential Circuits |
| 1 | In synchronous circuits, memory elements are clocked flip-flops. | In asynchronous circuits, memory elements are either unclocked flip-flops or time delay elements. |
| 2 | In synchronous circuits, the change in input signals can affect memory element upon activation of clock signal. | In asynchronous circuits change in input signals can affect memory element at any instant of time. |
| 3 | The maximum operating speed of clock depends on time delays involved. | Because of absence of clock, asynchronous circuits can operate faster than synchronous circuits. |
| 4 | Easier to design. | More difficult to design. |