Among the following one can act as the building blocks for the other gates is
A
NAND and NOR
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B
NAND and AND
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C
XOR and OR
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D
NOT and OR
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Solution
The correct option is A NAND and NOR NAND and NOR gates are known as universal gates. Any one of these gates can be used to implement any kind of logic gate. This kind of feasibility is does not exist with other gates i.e. any other gate cannot solely implement all logic gates. For example, AND gate cannot be implemented using an OR gate and vice-versa. The implementation of NAND and NOR gates to generate other logic gates is shown above.