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 19 of 117

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Q181.
Binary number 11001 is equivalent to decimal number

a.

35

b.

15

c.

105

d.

25

Discuss
Answer: (d).25
Q182.
Which of the following are included in the architecture of computer?

1. Addressing mode, design of CPU
2. Instruction set, data format
3. Secondary memory, operating system

Select the correct answer using the codes given below:

a.

1 and 2

b.

2 and 3

c.

1 and 3

d.

1, 2 and 3

Discuss
Answer: (a).1 and 2
Q183.
Assertion (A): Tristate logic is used for bus oriented systems

Reason (R): The outputs of a tristate logic are 0, 1 and indeterminant.

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: (c).A is true, R is false
Q184.
The value of 2โต in octal system is

a.

40

b.

20

c.

100

d.

200

Discuss
Answer: (a).40
Q185.
Assertion (A): ECL gate has very high speed of operation.

Reason (R): Transistors in ECL do not go into saturation region.

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
Q186.
A half adder adds

a.

2 bits

b.

3 bits

c.

4 bits

d.

2 or 3 bits

Discuss
Answer: (a).2 bits
Q187.
The no. of comparators required in a 3 bit comparator type ADC is

a.

2

b.

3

c.

7

d.

8

Discuss
Answer: (c).7
Q188.
If the ladder reference voltage is 2 V, then minimum comparator resolution required is

a.

0.125 V

b.

1.25 V

c.

12.5 V

d.

0

Discuss
Answer: (a).0.125 V
Q189.
In a 7 segment LED display, the minimum number of segments is activated when the input decimal number is

a.

0

b.

1

c.

2

d.

3

Discuss
Answer: (b).1
Q190.
A 10 bit ADC with a full scale output voltage of 10.24 V is to be designed to have ± LSB/2 accuracy. If ADC is calibrated at 25°C, the maximum net temperature coefficient of ADC should not exceed

a.

± 200 ฮผV/°C

b.

± 400 ฮผV/°C

c.

± 600 ฮผV/°C

d.

± 800 ฮผV/°C

Discuss
Answer: (a).± 200 ฮผV/°C
Page 19 of 117