What is the difference between synchronous and asynchronous circuits?

Synchronous circuits are digital circuits where the changes in the state of memory elements are synchronized to a clock signal. They use a clock to coordinate the timing of operations, ensuring that all parts of the circuit operate in sync. Asynchronous circuits, on the other hand, do not rely on a clock signal and operate based on the availability of input signals. Asynchronous circuits can be faster since they don’t wait for a clock signal, but they are more complex to design due to the need for careful management of signal timing to avoid race conditions and glitches.