COMPUTER SCIENCE AND ENGINEERING
DIGITAL LOGIC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Only if both inputs are high
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Only if both inputs are low
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Only if one input is high and the other is low
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If at least one of the inputs is low
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Detailed explanation-1: -The truth table of NAND gate is shown as above, which implies that if at least one of the input is low then the output is high.
Detailed explanation-2: -The output of NOR gate is high when all inputs are low. Explanation: As we see the truth table for NOR gate : When both the input is low (0), then output is high (1).
Detailed explanation-3: -Hence, from the above Truth Table of an XOR gate, we can conclude that, a two input XOR Gate produces a high output only when both the inputs are different.
Detailed explanation-4: -The output of a NAND gate is HIGH whenever one or more inputs are LOW. The output of a NOR gate is LOW whenever one or more inputs are HIGH. The output of an XOR gate is HIGH whenever the two inputs are different.
Detailed explanation-5: -In digital electronics, a NAND gate (NOT-AND) is a logic gate which produces an output which is false only if all its inputs are true; thus its output is complement to that of an AND gate. A LOW (0) output results only if all the inputs to the gate are HIGH (1); if any input is LOW (0), a HIGH (1) output results.