Difficulty: Easy
Correct Answer: 1, 0, 0, 1
Explanation:
Introduction / Context:The exclusive-NOR (XNOR) function outputs HIGH when its inputs are equal and LOW when they differ. Completing a truth table tests conceptual understanding of equality detection in digital logic.
Given Data / Assumptions:
Concept / Approach:XNOR is the complement of XOR. XOR is 1 when inputs differ; therefore XNOR is 1 when inputs are the same: 00 or 11. It is 0 for 01 and 10. This maps directly to the requested sequence w, x, y, z.
Step-by-Step Solution:
For 00: inputs equal → XNOR = 1 → w = 1.For 01: inputs differ → XNOR = 0 → x = 0.For 10: inputs differ → XNOR = 0 → y = 0.For 11: inputs equal → XNOR = 1 → z = 1.Verification / Alternative check:Boolean identity: XNOR = A′B′ + AB. Evaluate each row to confirm 1,0,0,1 in the specified order.
Why Other Options Are Wrong:
Common Pitfalls:Swapping XOR and XNOR; mixing row order; assuming a different input ordering, which would permute the output sequence.
Final Answer:1, 0, 0, 1
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