Two 4-bit comparators are cascaded to form an 8-bit comparator. The cascading inputs of the most significant 4 bits should be connected .

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to the outputs from the least significant 4- bit comparator

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to the cascading inputs of the least significant 4- bit comparator

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a = b to a logic high, a < b and a > b to a logic low

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ground

Q. Two 4-bit comparators are cascaded to form an 8-bit comparator. The cascading inputs of the most significant 4 bits should be connected .