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Fundamentals of logic gates: “A logic gate has one or more output terminals and a single input terminal.” Select the most appropriate evaluation.

Difficulty: Easy

Correct
Incorrect
Ambiguous because of special gates
Depends on implementation standard
Not applicable to combinational logic

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.

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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