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 49 of 117

Discover more Topics under Electronics and Communication Engineering

Q481.
Which of the following is decimal equivalent of the binary 1111111?

a.

27

b.

87

c.

127

d.

167

Discuss
Answer: (c).127
Q482.
A 555 timer can be used as

a.

an astable multivibrator

b.

monostable multivibrator

c.

frequency Divider only

d.

any of the above

Discuss
Answer: (d).any of the above
Q483.
Which of the following statements defines a full adder?

a.

It adds two binary digits and produces their SUM and CARRY

b.

It adds three inputs (two binary digits and a carry) and produces their SUM and CARRY

c.

It has two inputs and two outputs

d.

None of the above

Discuss
Answer: (b).It adds three inputs (two binary digits and a carry) and produces their SUM and CARRY
Q484.
The 8085 microprocessor is interrupted while executing MOV instruction at location 0210 H. What is the location at which contents of register E are stored.

a.

054 CH

b.

054 DH

c.

054 EH

d.

054 FH

Discuss
Answer: (c).054 EH
Q485.
The amplifier used in bootstrap voltage sweep should have a gain of

a.

+1

b.

+∞

c.

-1

d.

-∞

Discuss
Answer: (c).-1
Q486.
+12 V supply is given to plates a, d, g, and 0 V to other plates and grid of a VF display. The plates which will glow are

a.

a, d, g

b.

b, c, e, f

c.

all

d.

none

Discuss
Answer: (c).all
Q487.
An interrupt in which the external device supplies its address as well as the interrupt is known as

a.

vectored interrupt

b.

maskable interrupt

c.

polled interrupt

d.

non-maskable interrupt

Discuss
Answer: (a).vectored interrupt
Q488.
What is the decimal equivalent of the binary number shown in fourth row?

a.

79

b.

97

c.

117

d.

127

Discuss
Answer: (b).97
Q489.
The inputs to logic gate are 0. The output is 1. The gate is

a.

NAND or XOR

b.

OR or XOR

c.

AND or XOR

d.

NOR or Ex-NOR

Discuss
Answer: (d).NOR or Ex-NOR
Q490.
In a JK master slave flip flop race condition does not occur.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Page 49 of 117