Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q41: The binary numbers A = 1100 and B = 1001 are applied to the inputs of a comparator. What are the output levels?
- A: A > B = 1, A < B = 0, A < B = 1
- B: A > B = 0, A < B = 1, A = B = 0
- C: A > B = 1, A < B = 0, A = B = 0
- D: A > B = 0, A < B = 1, A = B = 1
View Answer
C
Q42: The function to be performed by the processor is selected by set of inputs known as ________
- A: Function Select Inputs
- B: MicroOperation selectors
- C: OPCODE Selectors
- D: None of given option
View Answer
C
Q43: For a 3-to-8 decoder how many 2-to-4 decoders will be required?
- A: 2
- B: 1
- C: 3
- D: 4
View Answer
B
Q44: GAL is an acronym for ________.
- A: Giant Array Logic
- B: General Array Logic
- C: Generic Array Logic
- D: Generic Analysis Logic
View Answer
C
Q45: A.(B.C) = (A.B).C is an expression of __________
- A: Demorgan’s Law
- B: Distributive Law
- C: Commutative Law
- D: Associative Law
View Answer
D
Q46: 2's complement of any binary number can be calculated by
- A: adding 1's complement twice
- B: adding 1 to 1's complement
- C: subtracting 1 from 1's complement
- D: calculating 1's complement and inverting Most significant bit
View Answer
B
Q47: The OLMC of the GAL16V8 is _______ to the OLMC of the GAL22V10
- A: Similar
- B: Different
- C: Similar with some enhancements
- D: Depends on the type of PALs input size
View Answer
C
Q48: All the ABEL equations must end with ________
- A: “ . “ (a dot)
- B: “ $ “ (a dollar symbol)
- C: “ ; “ (a semicolon)
- D: “ endl “ (keyword “endl”)
View Answer
C
Q49: Which one is true:
- A: Power consumption of TTL is higher than of CMOS
- B: Power consumption of CMOS is higher than of TTL
- C: Both TTL and CMOS have same power consumption
- D: Power consumption of both CMOS and TTL depends on no. of gates in the circuit.
View Answer
A
Q50: According to Demorgan’s theorem: _________
- A: A.B.C
- B: A + B + C
- C: (A + B) . (A + C)
- D: (A.B) . C
View Answer
C