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Welcome to the IoT Hardware MCQs Page

Dive deep into the fascinating world of IoT Hardware with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of IoT Hardware, a crucial aspect of Internet of Things (IoT). In this section, you will encounter a diverse range of MCQs that cover various aspects of IoT Hardware, 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 Internet of Things (IoT).

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Check out the MCQs below to embark on an enriching journey through IoT Hardware. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Internet of Things (IoT).

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

IoT Hardware MCQs | Page 6 of 15

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Q51.
PSEN stands for ________

a.

Program Select Enable

b.

Peripheral Store Enable

c.

Program Store Enable

d.

Peripheral Select Enable

Discuss
Answer: (c).Program Store Enable
Q52.
Find the machine cycle for AT89C51 if XTAL = 11.0592MHz.

a.

90.42us

b.

361.68us

c.

1.085us

d.

150.145us

Discuss
Answer: (b).361.68us
Q53.
What is the operation for mode 0?

a.

13-bit timer mode, 8-bit timer/counter THx and TLx as 5-bit prescalar

b.

16-bit timer mode, 16-bit timer/counter THx and TLx are cascaded, no prescalar

c.

8-bit auto reload mode, 8-bit auto reload time/counter; THx holds a value which is to be reloaded into TLx each time it overflows

d.

Spilt timer mode

Discuss
Answer: (a).13-bit timer mode, 8-bit timer/counter THx and TLx as 5-bit prescalar
Q54.
What is the operation for mode 1?

a.

13-bit timer mode, 8-bit timer/counter THx and TLx as 5-bit prescalar

b.

16-bit timer mode, 16-bit timer/counter THx and TLx are cascaded, no prescalar

c.

8-bit auto reload mode, 8-bit auto reload time/counter; THx holds a value which is to be reloaded into TLx each time it overflows

d.

Spilt timer mode

Discuss
Answer: (b).16-bit timer mode, 16-bit timer/counter THx and TLx are cascaded, no prescalar
Q55.
Which is the operation for mode 2?

a.

13-bit timer mode, 8-bit timer/counter THx and TLx as 5-bit prescalar

b.

16-bit timer mode, 16-bit timer/counter THx and TLx are cascaded, no prescalar

c.

8-bit auto reload mode, 8-bit auto reload time/counter; THx holds a value which is to be reloaded into TLx each time it overflows

d.

Spilt timer mode

Discuss
Answer: (c).8-bit auto reload mode, 8-bit auto reload time/counter; THx holds a value which is to be reloaded into TLx each time it overflows
Q56.
Which is the operation for mode 3?

a.

13-bit timer mode, 8-bit timer/counter THx and TLx as 5-bit prescalar

b.

16-bit timer mode, 16-bit timer/counter THx and TLx are cascaded, no prescalar

c.

8-bit auto reload mode, 8-bit auto reload time/counter; THx holds a value which is to be reloaded into TLx each time it overflows

d.

Spilt timer mode

Discuss
Answer: (d).Spilt timer mode
Q57.
Function of IE1 in TCON register?

a.

External interrupt 1 Edge flag. Not related to timer operations

b.

External interrupt 1 Edge flag. Not related to timer operations

c.

External interrupt 0 single type control bit

d.

External interrupt 1 to be triggered by a falling edge signal

Discuss
Answer: (b).External interrupt 1 Edge flag. Not related to timer operations
Q58.
8051 controller contains how many registers?

a.

5

b.

3

c.

1

d.

2

Discuss
Answer: (d).2
Q59.
General purpose memory is called as ________

a.

ROM memory

b.

RAM memory

c.

SRAM memory

d.

EPROM memory

Discuss
Answer: (b).RAM memory
Q60.
Which timer register has both timers in it?

a.

TMOD

b.

TCON

c.

Both TMOD and TCON

d.

Neither TMOD nor TCON

Discuss
Answer: (a).TMOD
Page 6 of 15

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