For the given combination of gates, if the logic states of inputs `A,B,C,` are as follows `A=B=C=0` and `A=B=1, C=0` then the logic states of output `D` are

Options

A. 0, 0
B. 0, 1
C. 1, 0
D. 1, 1

Answer

D

Explanation

The output D for the given combination
`D=bar((A*B)*C)=bar((A+B))+barC`
If A=B=C=0, then `D=bar((0+0))=bar0=bar0+bar0=1+1=1`
`If A=B=1`, then `D=bar((1+1))=bar0=bar1+bar0=0+1=1`