Microcontroller Questions

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24.

Which of the following pin of the LCD is used for adjusting its contrast?

A

pin no 3

B

pin no 1

C

pin no 3

D

pin no 2

Correct Answer: A

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25.

Point out the correct statement about about DAC0808?

A

It has current as an output

B

Parallel digital data to analog data conversion

C

Both A & B

D

None of the above

Correct Answer: B

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26.

Which of the following register usually store the output generated by ALU in several arithmetic and logical operations?

A

Special Function Register

B

Timer Register

C

Accumulator

D

Stack Pointer

Correct Answer: C

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27.

Which of the following operations are performed by stack pointer during its incremental phase?

A

Pop

B

Push

C

Return

D

None of the above

Correct Answer: D

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28.

Which of the following is the default value of stack once after the system undergoes the reset condition?

A

08H

B

09H

C

00H

D

07H

Correct Answer: D

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29.

Which of the following commands are used for addressing the off-chip data and associated codes respectively by data pointer?

A

MOVC & MOVY

B

MOVY & MOVB

C

MOVZ & MOVA

D

MOVX & MOVC

Correct Answer: D

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30.

Which of the following is the bit addressing range of addressable individual bits over the on-chip RAM?

A

00H to 7FH

B

01H to 7FH

C

00H to FFH

D

&0H to FFH

Correct Answer: A

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