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Welcome to the Microcontroller MCQs Page

Dive deep into the fascinating world of Microcontroller with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Microcontroller, a crucial aspect of Computer Architecture. In this section, you will encounter a diverse range of MCQs that cover various aspects of Microcontroller, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Computer Architecture.

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Check out the MCQs below to embark on an enriching journey through Microcontroller. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Computer Architecture.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Microcontroller. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Microcontroller MCQs | Page 12 of 36

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Q111.
The key detection and the key identification are two different procedures?

a.

true

b.

false

c.

depends on the circumstances

d.

difficult to tell

Discuss
Answer: (a).true
Q112.
What is described by the following command?
KCODE0<<1

a.

load KCODE0 with 0

b.

rotate the contents of the KCODE0 register to the right

c.

rotate the contents of the KCODE0 register to the left

d.

none of the mentioned

Discuss
Answer: (b).rotate the contents of the KCODE0 register to the right
Q113.
If the pins of the keyboard are used as an interrupt, then these pins will cause interrupt of what type?

a.

External hardware interrupt

b.

Timer interrupt

c.

TI/RI interrupt

d.

None of the mentioned

Discuss
Answer: (a).External hardware interrupt
Q114.
What will happen if two keys of the keyboard are pressed at a time?

a.

both the keys will be displayed on the screen

b.

the key which is being actually pressed(for more then 20microseconds) will be displayed

c.

the key that is pressed first will be displayed

d.

none of the mentioned

Discuss
Answer: (b).the key which is being actually pressed(for more then 20microseconds) will be displayed
Q115.
Why initially all keys are considered open before detecting the key pressed?

a.

to make task easy

b.

to remove the errors caused by other pressing keys during detection

c.

to remove the flow problems

d.

none of the mentioned

Discuss
Answer: (b).to remove the errors caused by other pressing keys during detection
Q116.
Which of the following is correct about the word resolution in ADC DAC converters in AVR’s?

a.

it is the smallest change that can be described by an ADC

b.

it is equal to Vref/2^n (where n represents the number of bits)

c.

it is 0.076 for n=16 and Vref=5V

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q117.
In an ADC, we can calculate the output voltage from the formula

a.

Step size / Vin

b.

Step size * Vin

c.

Vin / step size

d.

Vref / step size

Discuss
Answer: (c).Vin / step size
Q118.
ADC0848 is a ____________ bit converter?

a.

16

b.

4

c.

8

d.

48

Discuss
Answer: (c).8
Q119.
Which of the following factors can affect the step size calculation?

a.

number of bits

b.

input current

c.

output current

d.

all of the mentioned

Discuss
Answer: (a).number of bits
Q120.
Which of the following is correct about the word sensors?

a.

that senses something

b.

it is a type of a transducer that converts one form of energy to another

c.

it can produce output in the form of electrical pulses, current or voltage

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Page 12 of 36

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