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MCQ

Q.

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

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MCQ

1.

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

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2.

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

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3.

Which of the following is the function of the SCON register?

A

control SMOD registers

B

control SBUF and SMOD registers

C

program the start bit, stop bit, and data bits of framing

D

None of the above

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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

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5.

The 8051 microprocessor has ________ parallel I/O ports.

A

2

B

3

C

4

D

5

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