Microprocessors MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Microprocessors, 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 Microprocessors 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 Microprocessors mcq questions that explore various aspects of Microprocessors problems. Each MCQ is crafted to challenge your understanding of Microprocessors 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 Microprocessors 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 Microprocessors. 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 Microprocessors knowledge to the test? Let's get started with our carefully curated MCQs!

Microprocessors MCQs | Page 49 of 59

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Q481.
Which of the following directives in 8085 causes two bytes to be reserved in the memory?

a.

D S

b.

D B

c.

D W

d.

E Q U

Discuss
Answer: (c).D W
Q482.
In 8086 the flag which enables or disables external interrupts is

a.

IF

b.

DF

c.

TF

d.

CF

Discuss
Answer: (a).IF
Q483.
Which of the following is a valid integer variable in Fortran 77?

a.

KM

b.

K M - 1

c.

DELHI

d.

$ 318

Discuss
Answer: (a).KM
Q484.
8255 A has three 8 bit ports A, B, C for peripheral data transfer. For programming 8255 A, these ports are grouped as

a.

Port A with Port B

b.

Port A with 4 most significant ports of C, port B with 4 least significant ports of C

c.

Port A with Port C

d.

none of the above

Discuss
Answer: (b).Port A with 4 most significant ports of C, port B with 4 least significant ports of C
Q485.
'WRITE' is a

a.

Word processor

b.

Line editor

c.

Text editor

d.

Column editor

Discuss
Answer: (a).Word processor
Q486.
The number of key words in C is

a.

4

b.

8

c.

16

d.

32

Discuss
Answer: (d).32
Q487.
In which of the following 8085 instructions no condition flags are affected?

a.

INX rp

b.

INR r

c.

SBI data

d.

INR M

Discuss
Answer: (a).INX rp
Q488.
Assertion (A): In register indirect addressing mode of 8085, the address of operand is in the specified register.

Reason (R): An example of register indirect addressing mode is MOV, A, M..

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 correct R is wrong

d.

A is wrong R is correct

Discuss
Answer: (b).Both A and R are correct but R is not correct explanation of A
Q489.
A high level language is less efficient than machine language.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q490.
In the dimension statement DIMENSION A (50, 50), K (100, 100) the total number of locations reserved will be

a.

2500

b.

100000

c.

125000

d.

250000

Discuss
Answer: (c).125000
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