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Welcome to the 8051 Microcontroller MCQs Page

Dive deep into the fascinating world of 8051 Microcontroller with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of 8051 Microcontroller, a crucial aspect of Computer Architecture. In this section, you will encounter a diverse range of MCQs that cover various aspects of 8051 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 8051 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 8051 Microcontroller. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

8051 Microcontroller MCQs | Page 10 of 14

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Q91.
While programming the ADC0804 IC what steps are followed?

a.

select the analog channel, start conversion, monitor the conversion, display the digital results

b.

select the analog channel, activate the ALE signal (L to H pulse), start conversion, monitor the conversion, read the digital results

c.

select the analog channel, activate the ALE signal (H to L pulse), start conversion, monitor the conversion, read the digital results

d.

select the channel, start conversion, end the conversion

Discuss
Answer: (b).select the analog channel, activate the ALE signal (L to H pulse), start conversion, monitor the conversion, read the digital results
Q92.
Step size is selected by which two bits?

a.

Vref/2

b.

Vin

c.

Both of the mentioned

d.

None of the mentioned

Discuss
Answer: (a).Vref/2
Q93.
What is the difference between ADC0804 and MAX1112?

a.

ADC0804 has 8 bits and MAX1112 has 1 bit for data output

b.

ADC0804 is used for adc and dac conversions whereas MAX1112 is used for serial data transmissions

c.

None of the mentioned

d.

Both of the mentioned

Discuss
Answer: (a).ADC0804 has 8 bits and MAX1112 has 1 bit for data output
Q94.
Which of the following statements are true about DAC0808 ?

a.

parallel digital data to analog data conversion

b.

it has current as an output

c.

both of the mentioned

d.

none of the mentioned

Discuss
Answer: (a).parallel digital data to analog data conversion
Q95.
8 input DAC has

a.

8 discrete voltage levels

b.

64 discrete voltage levels

c.

124 discrete voltage levels

d.

256 discrete voltage levels

Discuss
Answer: (d).256 discrete voltage levels
Q96.
INTR, WR signal are an input/output signal pin ?

a.

both are output

b.

both are input

c.

one is input and the other is output

d.

none of the mentioned

Discuss
Answer: (c).one is input and the other is output
Q97.
What is the function of the SCLK pin in MAX1112 ?

a.

It is used to bring data in

b.

It is used to bring data out and send in the control byte, one at a time

c.

It is used to get output clock

d.

It is used to get serial output

Discuss
Answer: (b).It is used to bring data out and send in the control byte, one at a time
Q98.
A thermistor is a:

a.

sensor

b.

adc

c.

transducer

d.

micro controller

Discuss
Answer: (c).transducer
Q99.
What is the difference between LM 34 and LM 35 sensors?

a.

one is a sensor and the other is a transducer

b.

one’s output voltage corresponds to the Fahrenheit temperature and the other corresponds to the Celsius temperature.

c.

one is of low precision and the other is of higher precision.

d.

one requires external calibration and the other doesn’t require it

Discuss
Answer: (b).one’s output voltage corresponds to the Fahrenheit temperature and the other corresponds to the Celsius temperature.
Q100.
Transducers produce output voltage in the form of?

a.

an analog voltage in the form of current

b.

an analog voltage in the form of voltage

c.

an analog voltage in the form of pressure

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Page 10 of 14

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