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 parallel in-parallel out shift register all bits are loaded and read simultaneously.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q762.
One XOR gate can work as

a.

one bit magnitude comparator

b.

two bit magnitude comparator

c.

either (a) or (b)

d.

neither (a) nor (b)

Discuss
Answer: (a).one bit magnitude comparator
Q763.
A Charge Couple Device (CCD) is a

a.

RAM

b.

sequential accessed memory

c.

content addressable memory

d.

read only memory

Discuss
Answer: (b).sequential accessed memory
Q764.
In an R-S latch, race condition occurs when

a.

R is low and S is high

b.

R and S are high

c.

R and S are low

d.

R is high and S is low

Discuss
Answer: (b).R and S are high
Q765.
The logic operation that will selectively clear bits in register A in those positions where these are 1 's in the bits of register B is given by

a.

A โ† A + B

b.

A โ† Aฬ…B

c.

A โ† Aฬ… + B

d.

A โ† AB

Discuss
Answer: (d).A โ† AB
Q766.
The 2's complement representation of the decimal number -4 is

a.

0100

b.

1100

c.

1011

d.

1010

Discuss
Answer: (b).1100
Q767.
The following program starts at location 0100H

L X ISP, 00FF - the content if accumulator
LXIH, 0701 - when the program counter
MVI A, 20 H - reaches 0109 H is

S U BM

a.

20 H

b.

02 H

c.

00 H

d.

FFH

Discuss
Answer: (a).20 H
Q768.
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
Q769.
In decimal system the base of radix is

a.

0

b.

1

c.

10

d.

e

Discuss
Answer: (c).10
Q770.
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
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