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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 10 of 36

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Q91.
The USART in AVR based micro controllers operate at which of the following modes?

a.

double speed asynchronous mode

b.

master synchronous

c.

slave synchronous

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q92.
Which bit of the UCSRA is used for doubling the baud rate of the transmission?

a.

DOR

b.

PE

c.

U2X

d.

MPCM

Discuss
Answer: (c).U2X
Q93.
What is the use of the PE and the FE bits of the UCSRA register?

a.

they are used for keeping a check at the speed of transmission and reception

b.

they are used for keeping a check at the data bits to be transferred

c.

they are used to keep the transmission error free

d.

they are used as extra redundant bits with no use

Discuss
Answer: (c).they are used to keep the transmission error free
Q94.
Which of the following bits are used for setting the data frame size?

a.

UCSZ0

b.

U2X

c.

DOR

d.

MPCM

Discuss
Answer: (a).UCSZ0
Q95.
Which of the following parameters should the transmitter and the receiver agree upon before starting a serial transmission?

a.

baud rate

b.

frame size

c.

stop bit

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q96.
In AVR, the LCD operates in two main modes, it can be in 8 bit or 4 bit data.

a.

true

b.

false

c.

depends on the situation

d.

can’t be said

Discuss
Answer: (a).true
Q97.
What can be the sequence of commands that may be used for initializing an LCD?

a.

0x06, 0x0e, 0x01

b.

0x0e, 0x01, 0x80

c.

0x38, 0x0e, 0x01

d.

all of the mentioned

Discuss
Answer: (c).0x38, 0x0e, 0x01
Q98.
When the LCD operates in the 4 bit mode, then what more commands are added to it?

a.

33

b.

32

c.

28

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q99.
What is the main function of the LPM instruction used in LCD?

a.

for initializing the LCD in the read mode

b.

for initializing the LCD in the write mode

c.

for sending a long string of characters to the LCD

d.

all of the mentioned

Discuss
Answer: (c).for sending a long string of characters to the LCD
Q100.
The RS pin acts as an

a.

input pin

b.

output pin

c.

any of the mentioned depending on the conditions

d.

none of the mentioned

Discuss
Answer: (a).input pin
Page 10 of 36

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