Microcontroller Questions

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1.

 What is true about microcontroller?

A

A microcontroller is a small and low-cost microcomputer

B

It is designed to perform the specific tasks of embedded systems

C

microcontroller consists of the processor, the memory, Serial ports, peripherals.

D

All of the above

Correct Answer: D

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2.

Which is false about microcontroller?

A

Microcontrollers are used to execute a single task within an application.

B

It consists of CPU, RAM, ROM, I/O ports.

C

Its power consumption is high because it has to control the entire system.

D

It is built with CMOS technology

Correct Answer: C

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3.

 This type of microcontroller is generally used in automatically controlled appliances like automatic operational machines.

A

8-bit microcontroller

B

16-bit microcontroller

C

32-bit microcontroller

D

64-bit microcontroller

Correct Answer: C

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4.

 This type of microcontroller is designed in such a way that they do not have a program memory on the chip.

A

External memory microcontroller

B

Embedded memory microcontroller

C

CISC

D

RISC

Correct Answer: A

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5.

Which of the following is an example of Embedded memory microcontroller?

A

Intel 8031 microcontroller

B

Intel 8051 microcontroller.

C

Intel 8081 microcontroller.

D

Intel 8085 microcontroller.

Correct Answer: B

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6.

8051 microcontroller is designed by Intel in?

A

1980

B

1981

C

1982

D

1983

Correct Answer: B

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7.

At what PIN number, there is a RESET pin, which is used to reset the microcontroller to its initial values?

A

PIN 9

B

PIN 20

C

PIN 30

D

PIN 35

Correct Answer: A

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8.

 At what PIN number, there is EA pin which stands for External Access input?

A

PIN 28

B

PIN 29

C

PIN 30

D

PIN 31

Correct Answer: C

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9.

When pins are configured as an output (i.e. logic 0), then the single port pins can receive a current of?

A

5mA

B

8mA

C

15mA

D

10mA

Correct Answer: D

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10.

 Which IO Port can be used for higher address byte with addresses A8-A15?

A

PORT1

B

PORT0

C

PORT3

D

PORT2

Correct Answer: D

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