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 45 of 117

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Q441.
A 6 bit dual slope A/D converter uses a reference of -6v and a 1 MHz clock. It uses a fixed count of 40 (101000). Then, what will be input, if the output register shows 100111 at the end of conversion.

a.

5.85 V

b.

6 V

c.

5 V

d.

10 V

Discuss
Answer: (a).5.85 V
Q442.
The number of accumulators in 6800 are

a.

2

b.

3

c.

1

d.

4

Discuss
Answer: (a).2
Q443.
A 14 pin AND gate IC has __________ AND gates.

a.

8

b.

6

c.

4

d.

2

Discuss
Answer: (c).4
Q444.
In 8085 microprocessor, how many lines are there in data bus?

a.

6

b.

8

c.

2

d.

16

Discuss
Answer: (b).8
Q445.
The basic shift register operations are

a.

serial in - serial out

b.

serial in - parallel out

c.

parallel in - serial out

d.

all of the above

Discuss
Answer: (d).all of the above
Q446.
The hexadecimal number 'A0' has the decimal value

a.

80

b.

256

c.

100

d.

160

Discuss
Answer: (d).160
Q447.
The code used to reduce the error due to ambiguity in reading of a binary optical encoder is

a.

Octal code

b.

Excess-3 code

c.

gray code

d.

BCD code

Discuss
Answer: (c).gray code
Q448.
In a clocked latch, clock drives

a.

R NAND gate

b.

S NAND gate

c.

both R and S NAND gates

d.

either R or S NAND gates

Discuss
Answer: (c).both R and S NAND gates
Q449.
Vectored interrupt is an interrupt that takes the program to a vector location. TRAP vectors to 0024 FI, RST 7.5 to 003 CH, RST 6.5 to 0034 H and

a.

RST 5.5

b.

RST 6.5

c.

24 H to 48 H

d.

RST 5.5 to 002 CH

Discuss
Answer: (d).RST 5.5 to 002 CH
Q450.
ALU carries out

a.

arithmetic operations

b.

logic operations

c.

both arithmetic and logic operations

d.

none of the above

Discuss
Answer: (c).both arithmetic and logic operations
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