# Digital Electronics Multiple Choice Questions and Answers - Computer Science - Page 2

(Showing: 11 - 20 out of 25 MCQs) Here we discuss the multiple choice questions of digital electronics that covers many important and interesting concepts about computer.
11. Any number with an exponent of zero is equal to:
[A] zero
[B] one
[C] that number
[D] ten
12. Any number with an exponent of zero is equal to:
[A] one
[B] zero
[C] that number
[D] ten
13. What is a digital-to-analog converter?
[A] It allows the use of cheaper analog techniques, which are always simpler.
[B] It takes the digital information from an audio CD and converts it to a usable form.
[C] It converts direct current to alternating current.
[D] It stores digital data on a hard drive.
14. The output of an AND gate is LOW ________.
[A] when any input is LOW
[B] all the time
[C] when all inputs are HIGH
[D] when any input is HIGH
15. The output of an OR gate is LOW when ________.
[A] all inputs are LOW
[B] any input is LOW
[C] any input is HIGH
[D] all inputs are HIGH
16. When used with an IC, what does the term "QUAD" indicate?
[A] 4 circuits
[B] 2 circuits
[C] 8 circuits
[D] 6 circuits
17. How many pins does the 4049 IC have?
[A] 20
[B] 16
[C] 14
[D] 18
18. The Boolean expression for a 3-input AND gate is ________.
[A] X = AB
[B] X = ABC
[C] X = A + B + C
[D] X = AB + C
19. What is the Boolean expression for a three-input AND gate?
[A] X = A + B + C
[B] X = A · B · C
[C] A �?? B �?? C
[D] A \$ B \$ C
20.

What is the Boolean expression for a three-input AND gate?

[A] X = A + B + C
[B] X = A · B · C
[C] A · B · C
[D] A \$ B \$ C
Are these questions helpful for you?

Sneha manthanwar 4 years ago Reply

It's good but some more questions should be added

Sunil Lakra 4 years ago Reply

really it is helpfull,need more qstn

Multiple choice questions and answers Electric Circuits Fields
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Sainaveen Ravela 5 years ago Reply

need more questions on different types of flipflops

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CM SHARMA 6 years ago Reply

NEED Sequential Circuit questioms

sarat akasapu 7 years ago Reply

Good but some bits are repetitive