Asynchronous circuits are usually faster than synchronous circuits because they are free running and do not depend on the frequency of the clock. All the state variable changes are synchronized with a universal clock signal.

Which of the following circuit has faster operation?

Whose operations are more faster among the following? Explanation: Combinational circuits are often faster than sequential circuits. Since the combinational circuits do not require memory elements whereas the sequential circuits need memory devices to perform their operations in sequence.

What are the 2 types of asynchronous circuits?

In asynchronous sequential circuits input and output signals are defined at every value of time. In synchronous sequential circuits memory elements are used like clocked flip flop. In asynchronous sequential circuits un-clocked memory elements are used like un-clocked flip flop or time delay elements.