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GATE 2026 · CS2 - Afternoon
Digital LogicCombinational CircuitsmediumNAT2 marks
Consider the digital circuit shown below with two input lines A and B, two select lines S0 and S1, and an output line Y. The blocks Q and M represent active high 2:4 decoder and 4-to-1 multiplexer, respectively. Out of 16 possible input combinations, the number of combinations that produce Y=1 is ____ (answer in integer). Note: One input combination is an instance of [A B S1 S0].
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