Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q451: In a logic function generator using a multiplexer, what do the select inputs represent?
- A: The function variables
- B: The function output
- C: The logic gates used in the function
- D: The number of inputs required for the function
View Answer
A
Q452: How is operation sequencing achieved in a manufacturing process controlled by a multiplexer?
- A: By using a counter to step through different processes
- B: By enabling all processes simultaneously
- C: By using a 2-input multiplexer to switch between different operations
- D: By connecting multiple decoders in parallel
View Answer
A
Q453: What is the primary function of a Demultiplexer?
- A: To route data from multiple inputs to a single output
- B: To route data from a single input to multiple outputs
- C: To combine multiple outputs into a single input
- D: To perform arithmetic operations on inputs
View Answer
B
Q454: What is the difference between a 1-to-4 Demultiplexer and a 2-to-4 Decoder?
- A: The Demultiplexer has a single input and multiple outputs
- B: The Decoder has a single input and multiple outputs
- C: The Demultiplexer has multiple inputs and a single output
- D: The Decoder has multiple inputs and a single output
View Answer
A
Q455: In a 1-to-4 Demultiplexer, what does the Data Input line do?
- A: It enables the selection of outputs
- B: It routes data from the outputs to the input
- C: It functions as the address input for the demultiplexer
- D: It controls the power supply of the Demultiplexer
View Answer
A
Q456: What is a common application of a Demultiplexer in computing?
- A: Connecting a single source to multiple destinations
- B: Adding two numbers together
- C: Multiplying two numbers
- D: Converting parallel data to serial data
View Answer
A
Q457: How does a Demultiplexer reconstruct parallel data from a serial data stream?
- A: By using a counter to route data to successive outputs
- B: By combining all serial data into one output
- C: By converting serial data to a single parallel output
- D: By storing data in a single register
View Answer
A
Q458: What does a Programmable Logic Device (PLD) replace in digital circuits?
- A: Logic gates and MSI chips
- B: Memory chips
- C: Microprocessors
- D: Analog components
View Answer
A
Q459: Which arrays in a Programmable Logic Device (PLD) can be programmed?
- A: AND and OR arrays
- B: Only AND arrays
- C: Only OR arrays
- D: Flip-flops
View Answer
A
Q460: What is the main feature of a Programmable Read-Only Memory (PROM)?
- A: A fixed AND array and a programmable OR array
- B: A programmable AND array and a fixed OR array
- C: An entirely programmable array
- D: A fixed OR array and a programmable AND array
View Answer
A