A

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Q. The open collector outputs of two 2-input NAND gates are connected to a common pull-up resistor. If the inputs of the gates are A, B and C, D respectively, the output is equal to ?

  • (A) (A.B)’.(C.D)’
  • (B) (A.B)’+(C.D)’
  • (C) A.B+C.D
  • (D) A.B C.D

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