Fundamentals of logic gates: “A logic gate has one or more output terminals and a single input terminal.” Select the most appropriate evaluation.
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ACorrect
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BIncorrect
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CAmbiguous because of special gates
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DDepends on implementation standard
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ENot applicable to combinational logic
Answer
Correct Answer: Incorrect
Explanation
Introduction / Context:Basic logic gates are combinational devices with one output and one or more inputs. The given statement flips this conventional description.
Given Data / Assumptions:
- Typical gates: AND, OR, NAND, NOR, XOR, XNOR, NOT.
- Standard I/O structure: multiple inputs (except NOT) and single output.
Concept / Approach:Review the canonical definition: A logic gate implements a Boolean function. In almost all common cases, there is exactly one output; the number of inputs can be one (NOT) or more (AND with 2, 3, 4 inputs, etc.).
Step-by-Step Solution:
Step 1: Recall the I/O pattern for common gates.Step 2: Compare with the statement that claims one input and multiple outputs.Step 3: Conclude the statement is incorrect.Verification / Alternative check:Datasheets for 7400-series or CMOS 4000-series gates show single-output symbols with varying input counts, confirming the standard arrangement.
Why Other Options Are Wrong:
Correct: Contradicts standard definitions.Ambiguous / Depends on implementation: While complex ICs can have multiple outputs, basic “logic gate” definition remains single-output.Not applicable to combinational logic: Gates are combinational by definition.Common Pitfalls:Generalizing from complex devices (like decoders) back to a single logic gate symbol.
Final Answer:Incorrect