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 64 of 117

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Q631.
Assertion (A): In a BCD to 7 segment decoder the number of outputs active at one time is always the same.

Reason (R): A decoder can be used to interface BCD input to LED display.

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
Q632.
A master slave flip-flop has the characteristics that

a.

change in the I/P immediately reflected in the O/P

b.

change in the O/P occurs when the state of the master is affected

c.

change in the output occurs when the state of the slave is affected

d.

both the master and the slave states are affected at the same time

Discuss
Answer: (c).change in the output occurs when the state of the slave is affected
Q633.
Which of the following flip-flops is used as latch?

a.

JK flip-flop

b.

D flip-flop

c.

RS flip-flop

d.

T flip-flop

Discuss
Answer: (c).RS flip-flop
Q634.
Least expensive logic

a.

RTL

b.

DTL

c.

TTL

d.

ECL

Discuss
Answer: (a).RTL
Q635.
Logic pulser

a.

generates short duration pulses

b.

generates long duration pulses

c.

generates sinusoidal voltage

d.

generates ideal pulses

Discuss
Answer: (a).generates short duration pulses
Q636.
In 8085 microprocessor, if instruction RST is written in a program then the program will jump to location

a.

0020 H

b.

0024 H

c.

0028 H

d.

002 CH

Discuss
Answer: (c).0028 H
Q637.
In 8085 microprocessor, the RST 5.5 interrupt service routine start from location

a.

0020 H

b.

0024 H

c.

0028 H

d.

002 CH

Discuss
Answer: (d).002 CH
Q638.
Which memory requires periodic recharging?

a.

All ROMS

b.

All RAMS

c.

Static RAM

d.

Dynamic RAM

Discuss
Answer: (d).Dynamic RAM
Q639.
The hexadecimal number given below represent decimal numbers which are multiples of DC, C8, BE, 46, IE

a.

2

b.

6

c.

7

d.

10

Discuss
Answer: (c).7
Q640.
Decimal 45.15 when converted into 9's complement will become

a.

54.84

b.

45.48

c.

48.54

d.

45.84

Discuss
Answer: (a).54.84
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