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 24 of 117

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Q231.
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
Q232.
What is the direction of control bus?

a.

Unidirectional into ฮผp

b.

Unidirection out of ฮผp

c.

Bidirectional

d.

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

Discuss
Answer: (d).Mixed direction, i.e., some lines into ฮผp an some others out of ฮผp
Q233.
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
Q234.
The contents of stack location 2109 H after the call operation will be

a.

00001111

b.

01010101

c.

00100000

d.

00100010

Discuss
Answer: (c).00100000
Q235.
For the logic circuit shown in figure, the simplified Boolean expression for the output Y is

a.

A + B + C

b.

AB

c.

B

d.

C

Discuss
Answer: (b).AB
Q236.
In the given figure assume that initially Q = 1 with Clock Pulses being given, the subsequent states of Q will be

a.

1, 0, 1, 0, 1......

b.

0, 0, 0, 0, 0......

c.

1, 1, 1, 1, 1......

d.

0, 1, 0, 1, 0......

Discuss
Answer: (c).1, 1, 1, 1, 1......
Q237.
In the circuit shown below, the outputs Y1 and Y2 for the given initial condition Y1 = Y2 = 1 and after four input pulses will be

a.

Y1 = 1, Y2 = 0

b.

Y1 = 0, Y2 = 0

c.

Y1 = 0, Y2 = 1

d.

Y1 = 1, Y2 = 1

Discuss
Answer: (d).Y1 = 1, Y2 = 1
Q238.
For the logic circuit of the given figure the simplified Boolean expression is

a.

Y = AB + Aฬ… C

b.

Y = (AB) (Aฬ… C)

c.

Y = ABC

d.

Y = A Bฬ… + Aฬ… C

Discuss
Answer: (a).Y = AB + Aฬ… C
Q239.
The value of 2โต in octal system is

a.

40

b.

20

c.

100

d.

200

Discuss
Answer: (a).40
Q240.
Assertion (A): ECL gate has very high speed of operation.

Reason (R): Transistors in ECL do not go into saturation region.

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: (a).Both A and R are correct and R is correct explanation of A
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