Digital Electronics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Digital Electronics, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Digital Electronics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Digital Electronics mcq questions that explore various aspects of Digital Electronics problems. Each MCQ is crafted to challenge your understanding of Digital Electronics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Digital Electronics MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Digital Electronics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Digital Electronics knowledge to the test? Let's get started with our carefully curated MCQs!

Digital Electronics MCQs | Page 52 of 117

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Q511.
If tp is the pulse width, ฮ”t is the propagation delay, T is period of pulse train then the following condition can avoid the race around condition

a.

tp = ฮ”t = T

b.

2tp > ฮ”t > T

c.

tp < ฮ”t < T

d.

tp < ฮ”t < T

Discuss
Answer: (d).tp < ฮ”t < T
Q512.
In a Karnaugh map for an expression having 'don't care terms' the don't cares can be treated as

a.

0

b.

1

c.

1 or 0

d.

none of the above

Discuss
Answer: (c).1 or 0
Q513.
Which of the following pairs of octal and binary numbers are not equal?

a.

111 11011โ‚‚ = 767โ‚ˆ

b.

110110101โ‚‚ = 665โ‚ˆ

c.

11010โ‚‚ = 3โ‚ˆ

d.

10101.11โ‚‚ = 25.6โ‚ˆ

Discuss
Answer: (c).11010โ‚‚ = 3โ‚ˆ
Q514.
With a JK master-slave flip-flop the master is clocked when the clock is __________ , and the slave is triggered when the clock is __________ .

a.

low, low

b.

high, low

c.

low, high

d.

high, high

Discuss
Answer: (b).high, low
Q515.
The communicating capacitor reduces turn on time because

a.

it acts as an open circuit

b.

it allows maximum base circuit to flow

c.

it aids in removing the excess carrier from the base region

d.

none of these

Discuss
Answer: (b).it allows maximum base circuit to flow
Q516.
Computer virus is a piece of rough software of unknown origin that

a.

copies itself like a breeding germ

b.

spreads from one machine to another

c.

eats away processing power

d.

all of the above

Discuss
Answer: (d).all of the above
Q517.
In a 4 bit full adder how many half adders and OR gates are required

a.

8 and 4

b.

7 and 4

c.

7 and 3

d.

8 and 3

Discuss
Answer: (c).7 and 3
Q518.
Which of the following is not a specification of D/A and A/D converters?

a.

Gain

b.

Drift

c.

Speed

d.

Accuracy

Discuss
Answer: (a).Gain
Q519.
Words having 8 bits are to be stored into computer memory. The number of lines required for writing into memory are

a.

1

b.

2

c.

4

d.

8

Discuss
Answer: (d).8
Q520.
In 8085, to disable the whole interrupt system (except TRAP)

a.

the DI instruction may be used

b.

the DO instruction may be used

c.

the INTERRUPT instruction may be used

d.

the El instruction may be used

Discuss
Answer: (a).the DI instruction may be used
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