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The logic expression for the output of the circuit shown in figure below is:

  1. $\overline{AC} + \overline{BC} +CD$

  2. $\overline{A}C + \overline{B}C + CD$

  3. $ABC +\overline {C}\; \overline{D}$

  4. $\overline{A}\; \overline{B} + \overline{B}\;  \overline{C} +CD$

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1 Answer

Best answer
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$(((AB)' C)' (CD)' )' = ((AB)'C) + CD) = (A' + B')C + CD = A'C + B'C + CD$
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