Concepts Of Physics MCQ Edition [Volume 2]PhysicsSemiconductors and Semiconductor Devices

An AND gate can be constructed by the repeated use of

Options

AOR gate
BNOT gate
CNAND gate
DNOR gate

Correct answer

D. NOR gate

Step-by-step solution

NAND and NOR gates are universal logic gates, meaning any Boolean function or basic logic gate can be constructed using only NAND gates or only NOR gates. Using only NAND gates, an AND gate can be constructed by passing the output of a NAND gate through a NOT gate (which is made by tying the inputs of another NAND gate together): Y = A B = A B = NAND ( NAND (A, B), NAND (A, B)) Using only NOR gates, an AND gate can be constructed by applying De Morgan's laws: Y = A B = A + B = NOR ( NOR (A, A), NOR (B, B)) Therefor

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