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Microcontrollers Questions Set 19:

Quiz Mode

Which instruction converts the hex result into bcd result?

ORG

ADDC

DJMP

DA A

Solution:

How many user-definable bits are present in the Program Status Word (PSW) register?

Solution:

Status of AC and P flag in the addition of 25h and 82h will be______.

ac =0 , p=0

ac =0 , p=1

ac =1 , p=1

ac =1, p=0

Solution:

_________ machines store the most significant byte of data in the lowest memory address.

Mealy

Moore

Big Endian

Little Endian

Solution:

Which of the following file types contains a list of all the errors detected by the assembler?

fileName.asm

fileName.lst

fileName.obj

fileName.hex

Solution:

In which of the addressing mode the offset value + PC value will give the memory address.

long addressing

physical addressing

relative addressing

none of them

Solution:

Why are microcontrollers not considered general-purpose devices?

because they are based on VLSI technology

because they are not meant to do a single work at a time

because they are cheap

because they consume low power

Solution:

Which of the following is true about the direct addressing mode?

The symbol '@' should be used before the register name.

Entire 128 bytes cannot be accessed.

The register bank locations are accessed by the register name.

All of the above.

Solution:

SBUF is a type of which register ?

Peripheral control register

Peripheral Data registers

Pointer register

None of the above

Solution:

Which of the following is true for CISC (Complex Instruction Set Computer) architecture?

It is a type of microprocessor architecture that uses a small set of instructions of uniform length.

These processors offer the users hundreds of instructions of variable sizes.

This processors reduce the program size and hence a lesser number of memory cycles are required to execute the programs.

Both options 2 and 3 are true.

Microcontrollers Questions Set 19:

Which instruction converts the hex result into bcd result?

Solution:

How many user-definable bits are present in the Program Status Word (PSW) register?

Solution:

Status of AC and P flag in the addition of 25h and 82h will be______.

Solution:

_________ machines store the most significant byte of data in the lowest memory address.

Solution:

Which of the following file types contains a list of all the errors detected by the assembler?

Solution:

In which of the addressing mode the offset value + PC value will give the memory address.

Solution:

Why are microcontrollers not considered general-purpose devices?

Solution:

Which of the following is true about the direct addressing mode?

Solution:

SBUF is a type of which register ?

Solution:

Which of the following is true for CISC (Complex Instruction Set Computer) architecture?

Solution:

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