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Railways NTPC (Technical Ability) Analog and Digital Electronics Question Bank Analog and Digital Electronics

  • question_answer
    Which of these sets of logic gates are designated as universal gates?

    A)  NOR, NAND.   

    B)  XOR, NOR, NAND.

    C)  OR, NOT, AND.           

    D)  NOR, NAND, XNOR.

    Correct Answer: A

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