Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q281: How is the Product-of-Sums (POS) form represented?
- A: (A + B)(A + C)
- B: AB + ABC
- C: A + B + C
- D: (A + B)(A + C) (B + C)
View Answer
A
Q282: Which theorem states that the complement of a product of variables is equal to the sum of their complements?
- A: Demorgan’s First Theorem
- B: Demorgan’s Second Theorem
- C: Associative Law
- D: Commutative Law
View Answer
A
Q283: What is the result of simplifying the Boolean expression A + A.B?
- A: A + B
- B: A.B
- C: A
- D: A.B + A.C
View Answer
A
Q284: In a Sum-of-Products (SOP) form, what does each term represent?
- A: Sum of product terms
- B: Product of sum terms
- C: Sum of sum terms
- D: Product of product terms
View Answer
A
Q285: What is the correct SOP implementation for the expression B + AC?
- A: An OR gate followed by AND gates
- B: An AND gate followed by OR gates
- C: OR gates followed by AND gates
- D: An AND gate followed by OR gates
View Answer
C
Q286: How is the Boolean expression (A + B)(B + C) simplified in POS form?
- A: A + B.C
- B: A.B + B.C
- C: (A + B)(B + C)
- D: A.B + A.C
View Answer
C
Q287: What is the result of the Boolean operation (A + B).(A + C)?
- A: A + B + C
- B: A.B + B.C
- C: A.B.C
- D: A + B.C
View Answer
A
Q288: What is the simplified result of AB + A(B + C) + B(B + C)?
- A: B + AC
- B: A + B.C
- C: B + A.C
- D: A + B
View Answer
A
Q289: What does Demorgan’s Second Theorem state?
- A: The complement of a sum of variables is equal to the product of their complements.
- B: The complement of a product of variables is equal to the sum of their complements.
- C: The sum of complements equals the product of complements.
- D: The product of complements equals the sum of complements.
View Answer
A
Q290: What is the result of the Boolean expression A.B + A.B.C.D when A=0, B=0, C=1, and D=1?
- A: zero
- B: 1
- C: Undefined
- D: 0.5
View Answer
B