Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q161: What is the expression for a 2-input AND gate?
- A: A + B
- B: A . B
- C: A - B
- D: A / B
View Answer
B
Q162: Consider A=1,B=0,C=1. A, B and C represent the input of three bit NAND gate the output of the NAND gate will be _____
- A: Zero
- B: One
- C: Undefined
- D: No output as input is invalid
View Answer
B
Q163: What is the output of a NAND gate when all inputs are 1?
- A: 1
- B: zero
- C: 10
- D: 1
View Answer
B
Q164: The three fundamental gates are ___________
- A: AND, NAND, XOR
- B: OR, AND, NAND
- C: NOT, NOR, XOR
- D: NOT, OR, AND
View Answer
D
Q165: The total amount of memory that is supported by any digital system depends upon ______
- A: The organization of memory
- B: The structure of memory
- C: The size of decoding unit
- D: The size of the address bus of the microprocessor
View Answer
D
Q166: Stack is an acronym for _________
- A: FIFO memory
- B: LIFO memory
- C: Flash Memory
- D: Bust Flash Memory
View Answer
B
Q167: Addition of two octal numbers “36” and “71” results in ________
- A: 213
- B: 123
- C: 127
- D: 345
View Answer
C
Q168: ___________ is one of the examples of synchronous inputs.
- A: J-K input
- B: EN input
- C: Preset input (PRE)
- D: Clear Input (CLR)
View Answer
A
Q169: __________occurs when the same clock signal arrives at different times at different clock inputs due to propagation delay.
- A: Race condition
- B: Clock Skew
- C: Ripple Effect
- D: None of given options
View Answer
B
Q170: In a state diagram, the transition from a current state to the next state is determined by
- A: Current state and the inputs
- B: Current state and outputs
- C: Previous state and inputs
- D: Previous state and outputs
View Answer
A