Priority encoder definition check: A priority encoder asserts an output code for the highest-priority active input only. Evaluate the claim that it “encodes the highest and lowest value inputs simultaneously.”

Introduction / Context: Encoders map one-of-N inputs to a binary-encoded output. When multiple inputs might be active, a priority encoder resolves conflicts by selecting the highest-priority input according to a predefined order. Understanding this behavior is essential for interrupt controllers and bus arbitration.Given Data / Assumptions:

• Priority encoders produce a code for one active input at a time.
• They typically include a valid output and enable signals.
• “Highest and lowest simultaneously” contradicts single-winner resolution.

Concept / Approach: A priority encoder masks lower-priority inputs when any higher-priority input is active. Its truth table ensures only the top-ranked active line determines the output code, never a combination of highest and lowest simultaneously.Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer: