面试题与答案

A race condition occurs when the final state of a system depends on the timing of inputs, which can lead to unpredictable behavior.

Asynchronous logic does not use a clock signal and operates based on the arrival of input signals.

Clock skew refers to the variation in arrival times of a clock signal at different parts of a circuit.

A hazard is a momentary glitch in the output, and a hazard cover is a technique used to eliminate or mitigate hazards.

A race-around condition occurs when both inputs (J and K) of a JK flip-flop are high, causing the flip-flop to toggle continuously. To avoid this, one should be inverted or connected to the complement of the other.

An asynchronous counter does not use a common clock signal for all flip-flops. Instead, each flip-flop has its own clock input, resulting in a more flexible counting sequence.