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 22 of 117

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Q211.
The function of interface circuit is

a.

to match output conditions of driver with input conditions of load device

b.

to match output conditions of load device with input conditions of driver

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (a).to match output conditions of driver with input conditions of load device
Q212.
1274₁₆ - 3A7₁₆ = __________ .

a.

ACA₁₆

b.

ACB₁₆

c.

ECD₁₆

d.

AAA₁₆

Discuss
Answer: (c).ECD₁₆
Q213.
BCD number 1100111 = __________ ₁₀

a.

66

b.

67

c.

68

d.

69

Discuss
Answer: (b).67
Q214.
When microprocessor processes both positive and negative numbers, the representation used is

a.

1's complement

b.

2's complement

c.

signed binary

d.

any of the above

Discuss
Answer: (b).2's complement
Q215.
An AND gate has four inputs. One of the inputs is low and other inputs are high. The output

a.

is low

b.

is high

c.

is alternately low and high

d.

may be high or low depending on relative magnitudes of inputs

Discuss
Answer: (a).is low
Q216.
A 4 bit down counter can count from

a.

0000 to 1111

b.

1111 to 0000

c.

000 to 111

d.

111 to 000

Discuss
Answer: (b).1111 to 0000
Q217.
Assertion (A): In computers the data is stored in hexadecimal form

Reason (R): Hexadecimal representation is short as compared to binary representation.

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is true, R is false

d.

A is false, R is true

Discuss
Answer: (d).A is false, R is true
Q218.
Using 2's complement, the largest positive and negative number which can be stored with 8 bits are

a.

+128 and -127

b.

+128 and -128

c.

+127 and -128

d.

+127 and -127

Discuss
Answer: (c).+127 and -128
Q219.
Three Mod-16 counters are connected in cascade. The maximum counting range is

a.

16

b.

256

c.

4096

d.

none of the above

Discuss
Answer: (c).4096
Q220.
Assertion (A): XOR gate is not universal gate.

Reason (R): It is not possible to realize any Boolean function using XOR gates only.

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is true, R is false

d.

A is false, R is true

Discuss
Answer: (a).Both A and R are correct and R is correct explanation of A
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