Multiple choice

Which gate can be used in a combination to perform the function of AND, OR and NOT gates?

  1. AND

  2. OR

  3. NOT

  4. NAND

  5. XOR
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D Correct answer
Explanation

A NOT gate can be implemented using a NAND gate by connecting both the inputs of the NAND gate together.A NAND Gate performs the AND-NOT function.Removing the NOT gate at the outputof the NAND gate results in an AND gate. The effect of the NOT gate at the output of the NAND gate can be cancelled by connecting a NOT gate at the output of the NAND Gate.An OR Gate can be implemented using a combination of three NAND gates. The implementation is based on the alternate symbolic representation of the OR gate.

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