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

GATE · 1994 · CS · Question 1 subparts· Modified — slightly modified from the official paper; see the solution

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

1. A.

   ĀC+B̄C+CD

2. B.

   AC̄ + BC̄ + C̄D

3. C.

   ABC = (CD)̄

4. D.

   ĀB̄ + B̄C̄ + C̄D̄

Attempted by 11 students.