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Q.

The 8051 microprocessor has ________ parallel I/O ports.

A

2

B

3

C

4

D

5

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Similar Questions

MCQ

1.

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

Discussion

MCQ

2.

........... signal control the flow of data

A

DTR

B

RTS

C

Both 1 & 2

D

None of the above

Discussion

MCQ

3.

Which instructions affect the program counter?

A

Call & Return

B

Call & Jump

C

Push & Pop

D

Return & Jump

Discussion

MCQ

4.

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

Discussion

MCQ

5.

The assembler list file generated by an assembler mainly includes

A

Binary codes

B

Offset for each instruction

C

Assembly language statements

D

All of the Above

Discussion

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