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 103 of 117

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Q1021.
A 0 to 6 counter consist of 3 flip-flop and a combinational circuit of 2 input gates. The combinational circuit consist of

a.

one AND gate

b.

one OR gate

c.

one AND and One OR

d.

two AND gate

Discuss
Answer: (d).two AND gate
Q1022.
In an op-amp a virtual ground is a ground for

a.

voltage only

b.

current only

c.

both voltage and current

d.

neither voltage nor current

Discuss
Answer: (a).voltage only
Q1023.
Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after SBI 0B7H?

a.

12 H, 0

b.

12 H, 1

c.

DDH, 0

d.

DDH, 1

Discuss
Answer: (d).DDH, 1
Q1024.
The Central Processing Unit (CPU) of the 16-processor system developed by hardware and software teams of C-DOT, Bangalore is configured around

a.

Motorola 68020

b.

Motorola 68040

c.

Intel 80386

d.

Intel 80486

Discuss
Answer: (a).Motorola 68020
Q1025.
For NOR gate SR flip-flop, the 'no change' condition is

a.

S = 0, R = 0

b.

S = 1, R = 0

c.

S = 0, R = 1

d.

S = 1, R = 1

Discuss
Answer: (a).S = 0, R = 0
Q1026.
A depletion type NMOS is operated in enhancement mode. Vp = - 4 volts. For VGS = + 3 volts as VDS is increased, ID becomes nearly constant when Vps equals

a.

1 volt

b.

3 volts

c.

4 volt

d.

7 volts

Discuss
Answer: (d).7 volts
Q1027.
Which one of the following is D/A conversion technique?

a.

Successive approximation

b.

Weighted resistor

c.

Dual slope

d.

Single slope

Discuss
Answer: (b).Weighted resistor
Q1028.
Assuming accumulator contain A 64 and the carry is set (1). What will accumulator (A) and carry (CY) contain after ANA A?

a.

A 6 H, 1

b.

A 6 H, 0

c.

00 H, 0

d.

00 H, 1

Discuss
Answer: (b).A 6 H, 0
Q1029.
A number is expressed in binary 2's complement as 10011 decimal equivalent value is

a.

19

b.

13

c.

-19

d.

-13

Discuss
Answer: (d).-13
Q1030.
In INHIBIT operation

a.

output is 1 when both inputs are 0

b.

output is 0 when blocking input is 1

c.

output is 0 when blocking input is 0

d.

output is 1 when blocking input is either 0 or 1

Discuss
Answer: (b).output is 0 when blocking input is 1
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