AdvancedA-002-010-007
What is an AND gate?
C
Answer
Circuit design and power supplies
Type
A
A circuit that produces a logic "1" at its output only if one of its inputs is logic "1"
B
A circuit that produces a logic "1" at the output if at least one input is a logic "0"
C
A circuit that produces a logic "1" at its output only if all its inputs are logic "1"
D
A circuit that produces a logic "1" at its output if all inputs are logic "0"
Answer Notes
An AND gate is a fundamental digital logic gate that performs logical conjunction. It requires every single input to be "true" (logic "1") in order to produce a "true" output. If even a single input is logic "0", the output immediately becomes logic "0".
This strict requirement makes option C the only correct definition. The distractors describe other logic gates entirely: an OR gate outputs "1" if at least one input is "1", and a NAND gate outputs "1" if at least one input is "0".
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