Question:-
What is the Boolean expression for the output f of the combinational logic circuit of NOR gates given below?
Option (A)
Option (B)
Option(C)
Option(D)
Correct Option:
(A)
Question Solution:


[\(A+B)1 = A1B1]

(P1Q1+Q1R1).(P1R1 + Q1R1)

P1Q1 P1R1 + P1Q1Q1R1 +

Q1R1P1R1 + Q1R1Q1R1

P1Q1R1 + P1 Q1R1 + Q1P1R1 [\ XX = X]

P1Q1R1 + Q1P1R1 + Q1R1 [X + X = X]

P1Q1R1 + Q1R1

Q1R1[P1 +1] Þ Q1R1 Þ
question-answer-faq-2235