Jobs By Abekus

Microcontrollers Questions Set 17:

Quiz Mode

The value in register A after the execution of the following code is:

`CLR A`

`ORL A, #72H`

`CPL A`

8BH

8DH

00H

7DH

Solution:

Which instruction represents the logical OR instruction in the instruction set of 8051 microcontroller ?

ORL

ANL

CPL

NOP

Solution:

Which of the following is correct for moving data from ROM to accumulator?

MOVC A, @A+DPTR

MOVC A, @DPTR

MOVX A, @RO

Both 1 and 2 are correct.

Solution:

In modern terminology, a microcontroller is similar to, but less sophisticated than, a _____.

Control System

None of the above

System on a Chip (SoC)

Printed Circuit Board (PCB)

Solution:

Which of the following interrupt pins are set aside for hardware external interrupts in the 8051 microcontroller?

P 3.2 and P 3.3

P 3.2 and P 3.1

P 3.1 and P 3.0

P 3.0 and P 3.2

Solution:

How are the bits of the Program Status Word (PSW) register affected when selecting register Bank 2 in the 8051 microcontroller?

PSW.5=0 and PSW.4=1

PSW.2=0 and PSW.3=1

PSW.3=1 and PSW.4=1

PSW.3=0 and PSW.4=1

Solution:

What does the instruction 'mov A, R3' imply?

Copy the content of R3 to the accumulator

Copy the content of the accumulator to R3

Both 1 and 2

Copy the value pointed to by the content of R3 to the accumulator

Solution:

What is the memory address with which the stack pointer is initialized ?

00H

80H

07H

FFH

Solution:

If in a mode in 8051 microcontroller, a timer can receive and transmit the signals at the same time , then the timer must be in__________

mode 0

both 2 and 3

Half duplex mode

full duplex mode

Solution:

8051 fetches the instruction one by one from the address stored in the Program Counter and and stores it in _________ register for decoding.

Accumulator

Stack Pointer

DPTR

Instruction register

Microcontrollers Questions Set 17:

The value in register A after the execution of the following code is:

`CLR A`

`ORL A, #72H`

`CPL A`

Solution:

Which instruction represents the logical OR instruction in the instruction set of 8051 microcontroller ?

Solution:

Which of the following is correct for moving data from ROM to accumulator?

Solution:

In modern terminology, a microcontroller is similar to, but less sophisticated than, a _____.

Solution:

Which of the following interrupt pins are set aside for hardware external interrupts in the 8051 microcontroller?

Solution:

How are the bits of the Program Status Word (PSW) register affected when selecting register Bank 2 in the 8051 microcontroller?

Solution:

What does the instruction 'mov A, R3' imply?

Solution:

What is the memory address with which the stack pointer is initialized ?

Solution:

If in a mode in 8051 microcontroller, a timer can receive and transmit the signals at the same time , then the timer must be in__________

Solution:

8051 fetches the instruction one by one from the address stored in the Program Counter and and stores it in _________ register for decoding.

Solution:

Related Question Sets:

Related Topics:

Microcontrollers Questions Set 17:

The value in register A after the execution of the following code is: CLR A ORL A, #72H CPL A

Solution:

Which instruction represents the logical OR instruction in the instruction set of 8051 microcontroller ?

Solution:

Which of the following is correct for moving data from ROM to accumulator?

Solution:

In modern terminology, a microcontroller is similar to, but less sophisticated than, a _____.

Solution:

Which of the following interrupt pins are set aside for hardware external interrupts in the 8051 microcontroller?

Solution:

How are the bits of the Program Status Word (PSW) register affected when selecting register Bank 2 in the 8051 microcontroller?

Solution:

What does the instruction 'mov A, R3' imply?

Solution:

What is the memory address with which the stack pointer is initialized ?

Solution:

If in a mode in 8051 microcontroller, a timer can receive and transmit the signals at the same time , then the timer must be in__________

Solution:

8051 fetches the instruction one by one from the address stored in the Program Counter and and stores it in _________ register for decoding.

Solution:

Related Question Sets:

Related Topics:

The value in register A after the execution of the following code is:

`CLR A`

`ORL A, #72H`

`CPL A`