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MCQ Practice Question

Digital Electronics Combinational Circuits

A magnitude comparator cascades several comparison blocks from least-significant to most-significant groups. Which information must be propagated between blocks to obtain the final comparison?

AA>B, A=B, and A<B conditions
BOnly parity
COnly clock frequency
DOnly carry-out from an adder

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Correct Answer: A. A>B, A=B, and A<B conditions

Explanation: Cascaded magnitude comparison requires greater-than, equal-to, and less-than status so higher-order groups can determine the overall relation correctly.

Reference: Standard digital electronics: cascaded magnitude comparators

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