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 3 of 117

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Q21.
The circuit of the given figure gives the output Y =

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q22.
The number of product terms in the minimized sum of product expression obtained through the following K-map, where d, don't care.

a.

2

b.

3

c.

4

d.

5

Discuss
Answer: (a).2
Q23.
For the logic circuit of the given figure the simplified Boolean expression is

a.

A + BC

b.

A̅ + BC

c.

A̅ + B̅ C

d.

A + BC̅

Discuss
Answer: (b).A̅ + BC
Q24.
In the circuit of the given figure, Y =

a.

0

b.

1

c.

X

d.

X̅

Discuss
Answer: (a).0
Q25.
If A = B = 1, the outputs P and Q in the given figure are

a.

P = Q = 0

b.

P = 0, Q = 1

c.

P = 1, Q = 0

d.

P = Q = 1

Discuss
Answer: (b).P = 0, Q = 1
Q26.
In the given figure, Y =

a.

(A + B)C + DE

b.

AB + C(D + E)

c.

(A + B)C + D + E

d.

none of the above

Discuss
Answer: (a).(A + B)C + DE
Q27.
The minimized version of logic circuit in the given figure is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q28.
In the given figure shows a negative logic AND gate. If positive logic is used this gate is equivalent to

a.

AND gate

b.

OR gate

c.

NOR gate

d.

NAND gate

Discuss
Answer: (c).NOR gate
Q29.
The Boolean function/implemented in the figure using two I/P multiplexers is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q30.
For the logic circuit of the given figure the simplified Boolean equation

a.

Y = (A + B) (C + D) (E + F)

b.

Y = A = B + C + D + E + F

c.

ABCDEF

d.

ABC + DEF

Discuss
Answer: (a).Y = (A + B) (C + D) (E + F)
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