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 17 of 117

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Q161.
In a ripple counter,

a.

whenever a flip flop sets to 1, the next higher FF toggles

b.

whenever a flip flop sets to 0, the next higher FF remains unchanged

c.

whenever a flip flop sets to 1, the next higher FF faces race condition

d.

whenever a flip flop sets to 0, the next higher FF faces race condition

Discuss
Answer: (a).whenever a flip flop sets to 1, the next higher FF toggles
Q162.
Figure shows three pulse train inputs to a 3-input OR gate. Assuming positive logic, the output pulse rate train in figure (b) would be

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q163.
For the switch circuit, taking open as 0 and closed as 1, the expression for the circuit is Y. Y is given by

a.

A + (B + C) D

b.

A + BC + D

c.

A(BC + D)

d.

none of these

Discuss
Answer: (c).A(BC + D)
Q164.
If number of bits is N, the % resolution in analog to digital conversion is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q165.
Examine the following truth table. The product of sum from this truth table is

a.

(Xฬ… + Yฬ…) (X + Y)

b.

(X + Yฬ…) (Xฬ… + Yฬ…)

c.

(Xฬ… + Y) (Xฬ… + Yฬ…)

d.

(X + Yฬ…) (X + Y)

Discuss
Answer: (d).(X + Yฬ…) (X + Y)
Q166.
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
Q167.
What is the direction of address bus?

a.

Unidirectional into ฮผp

b.

Unidirection out of ฮผp

c.

Bidirectional

d.

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

Discuss
Answer: (b).Unidirection out of ฮผp
Q168.
The logic circuit of the given figure realizes the function

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q169.
For the given truth table, the correct Boolean expression is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q170.
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
Page 17 of 117