Which of the following gates will have an output of 1?
(A) 
(B) 
(C) 
(D) 
Answer & explanation
Correct answer: option 4
(A) is a NAND gate so output is $\overline{1×1}=\bar 1=0$
(B) is a NOR gate so output is $\overline{0+1}=\bar 1=0$
(C) is a NAND gate to output is $\overline{0×1}=\bar 0=0$
(D) is a XOR gate so output is 0 ⊗ 0 = 0
Following is NAND Gate $Y=\overline{AB}$