Write Boolean equation for the output of fig. and solve this equation for all possible input conditions.

Explanation

The Boolean equation for the output of fig.
(i) When A=0 B =0 then `Y= bar0+ bar0=1+1=1`
(ii) When A=0, B = 1, then, `Y= bar0+bar1=1+0=1`
(iii) When A= 1, B = 0, then `Y=bar1+bar0=0+1=1 `
(iv) When A= 1, B = 1, then `Y = bar1 + bar1 = 0+0=0 `Hence `Y= bar(AB)`