Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q321: How does grouping of don’t care conditions affect the final expression in Karnaugh Map?
- A: It does not affect the final expression
- B: It always makes the expression more complex
- C: It can simplify the final expression
- D: It is not necessary to consider don’t cares
View Answer
C
Q322: What is the first step in simplifying a Boolean expression using a Karnaugh Map?
- A: Grouping cells
- B: Mapping the expression
- C: Determining the minterms
- D: Filling in the K-map
View Answer
B
Q323: When simplifying a Boolean expression with a 4-variable Karnaugh Map, what does a group of 16 cells yield?
- A: Value of 0
- B: Value of 1
- C: Product term of 1 variable
- D: Product term of 2 variables
View Answer
B
Q324: What is placed in the cells corresponding to maxterms in a K-Map for a Standard POS expression?
- A: 1
- B: zero
- C: Both 0 and 1
- D: None of the above
View Answer
B
Q325: How many cells are filled with 0s in the K-Map for the expression (A + B + C).(A + B + C).(A + B + C).(A + B + C) when the maxterms are 1, 2, 5, and 7?
- A: 2
- B: 3
- C: 4
- D: 5
View Answer
C
Q326: What does a group of 1 cell represent in a 3-variable K-map?
- A: A sum term of one variable
- B: A sum term of two variables
- C: A sum term of three variables
- D: A group of 8 cells yielding 0
View Answer
A
Q327: What does a group of 4 cells represent in a 4-variable K-map?
- A: A sum term of one variable
- B: A sum term of two variables
- C: A sum term of three variables
- D: A sum term of four variables
View Answer
D
Q328: In the K-map simplification of a POS expression, how is a group of 0s used?
- A: They are grouped to form product terms
- B: They are grouped to form sum terms
- C: They are ignored
- D: They are replaced with 1s
View Answer
B
Q329: For a 3-variable K-map, how many cells yield a value of 0 for the expression if all maxterms are filled?
- A: 2
- B: 4
- C: 6
- D: 8
View Answer
D
Q330: In the K-map for a POS expression, how many groups are formed if there are 8 maxterms?
- A: 1
- B: 2
- C: 3
- D: 4
View Answer
C