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 58 of 117

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Q571.
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
Q572.
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
Q573.
The amplifier used in bootstrap voltage sweep should have a gain of

a.

+1

b.

+∞

c.

-1

d.

-∞

Discuss
Answer: (c).-1
Q574.
+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
Q575.
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
Q576.
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
Q577.
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
Q578.
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
Q579.
State transition table and state transition diagram form part of design steps for

a.

combinational circuits

b.

sequential circuits

c.

delay circuits

d.

all of the above

Discuss
Answer: (b).sequential circuits
Q580.
Which binary subtraction is incorrect?

a.

100101 - 100011 = 000000

b.

10000000 - 01000000 = 1000000

c.

10111110.1 - 101011.11 = 110010.11

d.

11111111 - 1111111 = 10000000

Discuss
Answer: (a).100101 - 100011 = 000000
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