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 77 of 117

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Q761.
In 8085 microprocessor, what is the length of PC (program counter)?

a.

6 bits

b.

8 bit

c.

12 bits

d.

16 bits

Discuss
Answer: (d).16 bits
Q762.
In decimal system the base of radix is

a.

0

b.

1

c.

10

d.

e

Discuss
Answer: (c).10
Q763.
The subtraction of a binary number Y from another binary number X, done by adding the 2's complement of Y to X results in a binary number without overflow. This implies that the result is

a.

-ve and is in normal form

b.

-ve and 2's complement form

c.

+ve and is in normal form

d.

+ve and in 2's complement

Discuss
Answer: (d).+ve and in 2's complement
Q764.
The decimal equivalent of the binary number 10110.0101011101 is

a.

22.2408216500

b.

22.3408216750

c.

22.3408213125

d.

22.3408203125

Discuss
Answer: (d).22.3408203125
Q765.
In standard TTL the totem pole stage refers to

a.

multiemitter input stage

b.

phase splitter

c.

output buffer

d.

open collector output stage

Discuss
Answer: (c).output buffer
Q766.
In 8085 microprocessor the value of the most significant bit of the result following the execution of any arithmetic or Boolean instruction is stored in

a.

the carry status flag

b.

the auxiliary carry status flag

c.

sign status flag

d.

zero status flag

Discuss
Answer: (c).sign status flag
Q767.
A two-input OR gate is designed for positive logic. However, it is operated with negative logic. The resulting logic operation will then be

a.

OR

b.

AND

c.

NOR

d.

EX-OR

Discuss
Answer: (a).OR
Q768.
A clock signal driving a 6-bit ring counter has a frequency of 1 MHz. How long is each timing bit high?

a.

1 ms

b.

2 ms

c.

3 ms

d.

6 ms

Discuss
Answer: (a).1 ms
Q769.
A twisted ring counter consisting of 4 FF will have

a.

4 states

b.

8 states

c.

2⁴ states

d.

None of the above

Discuss
Answer: (b).8 states
Q770.
Assertion (A): In a serial in-serial out shift register, access is available only to the left most or right most flip flops

Reason (R): If the output of a shift register is feedback to serial input it can be used as a ring counter.

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: (b).Both A and R are correct but R is not correct explanation of A
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