Important Digital Logic and Design Short Questions
Chapter: 6
Question 1:
What is the output of a NAND gate when all inputs are 1?
Answer:
The output of a NAND gate is 0 when all inputs are 1.
Chapter: 6
Question 2:
How does a NAND gate-based system detect a failure in exhaust fans?
Answer:
It activates an alarm when any of the connected exhaust fans fail, resulting in a NAND gate output of 1.
Chapter: 6
Question 3:
How does a NOR gate-based system control a washing machine?
Answer:
It switches off the machine if any sensor detects an error, setting the NOR gate output to 0.
Chapter: 6
Question 4:
What is the function of an XOR gate?
Answer:
An XOR gate outputs 1 when the inputs are dissimilar and 0 when they are the same.
Chapter: 6
Question 5:
What is the function of an XNOR gate?
Answer:
An XNOR gate outputs 1 when the inputs are the same and 0 when they are dissimilar.
Chapter: 6
Question 6:
How can you detect an odd number of 1s using logic gates?
Answer:
An XOR gate circuit can detect an odd number of 1s in a binary input.
Chapter: 6
Question 7:
How can you detect an even number of 1s using logic gates?
Answer:
A combination of XOR and XNOR gates can detect an even number of 1s in a binary input.
Chapter: 6
Question 8:
What is the role of transistors in logic gates?
Answer:
Transistors act as switches in logic gates, controlling the flow of current to perform logic operations.
Chapter: 6
Question 9:
How does CMOS technology differ from TTL?
Answer:
CMOS technology has lower power consumption and higher density but is slower than TTL.
Chapter: 6
Question 10:
What is the significance of the 74XX series in logic gates?
Answer:
The 74XX series identifies different types of logic gates in Integrated Circuit packages.