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 14 of 117

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Q131.
The circuit shown in figure converts

a.

BCD to binary code

b.

binary to excess-3 code

c.

excess-3 to Gray code

d.

gray to binary code

Discuss
Answer: (d).gray to binary code
Q132.
What is the direction of address bus?

a.

Unidirectional into μp

b.

Unidirection out of μp

c.

Bidirectional

d.

Mixed direction, i.e., some lines into up and some others out of μp

Discuss
Answer: (b).Unidirection out of μp
Q133.
The logic circuit of the given figure realizes the function

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q134.
For the given truth table, the correct Boolean expression is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q135.
The generic microprocessor contains a zero and a carry flag. These are located on the
The 8156 of a figure has RAM locations from 2000 H to 20 FFH.

a.

interrupt control

b.

status register

c.

either (a) or (b)

d.

none of the above

Discuss
Answer: (b).status register
Q136.
The open collector gates in the given figure are tied together. The output Y =

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q137.
The dual of the function A(B̅C + BC + BC̅) is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q138.
For the shaded area in Venn diagram of the given figure, the Boolean expression is

a.

AB + BC + CA

b.

ABC + A B C

c.

ABC + A B C

d.

ABC+AB

Discuss
Answer: (a).AB + BC + CA
Q139.
What is the direction of control bus?

a.

Unidirectional into μp

b.

Unidirection out of μp

c.

Bidirectional

d.

Mixed direction, i.e., some lines into μp an some others out of μp

Discuss
Answer: (d).Mixed direction, i.e., some lines into μp an some others out of μp
Q140.
How many zone bits are there?

The 8156 of a figure has RAM locations from 2000 H to 20 FFH.

a.

2

b.

4

c.

8

d.

16

Discuss
Answer: (c).8
Page 14 of 117