Edge-triggering polarity: A positive edge-triggered flip-flop changes state on a HIGH-to-LOW clock transition. Evaluate the statement.

Introduction / Context:Edge-triggered devices respond on a specific transition of the clock: positive (rising) or negative (falling). Understanding clock polarity is essential for timing design and multi-stage pipelines.

Given Data / Assumptions:

• Positive edge-triggered means action on LOW-to-HIGH transition.
• Negative edge-triggered means action on HIGH-to-LOW transition.
• Clock-to-output delay follows the triggering edge.

Concept / Approach:The statement claims a positive edge-triggered device reacts on a falling edge (HIGH-to-LOW), which contradicts the definition. Therefore, the statement must be judged incorrect.

Step-by-Step Solution:

Verification / Alternative check:Datasheets use a triangle or up-arrow symbol near the clock for positive edge; a down-arrow for negative edge. Rising edges are explicitly indicated as 0→1 transitions.

Why Other Options Are Wrong:

Common Pitfalls:Confusing edge polarity; overlooking that duty cycle does not affect which edge triggers (only timing margins do).

Final Answer:Incorrect