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 68 of 117

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Q671.
Digital circuits mostly use

a.

Diodes

b.

Bipolar transistors

c.

Diodes and bipolar transistors

d.

Bipolar transistors and FETs

Discuss
Answer: (c).Diodes and bipolar transistors
Q672.
What does the B register contain after the first MOV B, A has been executed?

a.

40 H

b.

60 H

c.

80 H

d.

80 D

Discuss
Answer: (a).40 H
Q673.
Program counter in a digital computer

a.

counts the number of program run in the machine

b.

counts the number of times a subroutine is called

c.

counts the number of times the loops are executed

d.

points the memory address of the current or the next instruction to be executed

Discuss
Answer: (d).points the memory address of the current or the next instruction to be executed
Q674.
__________ switch, a T flip-flop is used as __________ switch, a T flip-flop is used as switch

a.

toggled, delay

b.

delay, toggle

c.

set reset

d.

reset, set

Discuss
Answer: (b).delay, toggle
Q675.
In a three variable K map four adjacent cells give

a.

single variable term

b.

two variable term

c.

three variable term

d.

either (a) or (b)

Discuss
Answer: (a).single variable term
Q676.
In 2 out of 5 code, decimal number 8 is

a.

11000

b.

10100

c.

11000

d.

1010

Discuss
Answer: (b).10100
Q677.
In 8085 microprocessor, even after a Reset operation which of the following interrupts remains enabled?

a.

INTR

b.

RST 5.5

c.

RST 7.5

d.

TRAP

Discuss
Answer: (d).TRAP
Q678.
A decoder can be used as a demultiplexer.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q679.
ADC 0804 is a

a.

dual slope A/D converter

b.

single slope A/D converter

c.

successive approximation A/D converter

d.

either (a) or (b)

Discuss
Answer: (c).successive approximation A/D converter
Q680.
Assertion (A): BCD code is used in pocket calculators

Reason (R): BCD code is slower than binary.

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: (b).Both A and R are correct but R is not correct explanation of A
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