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Microcontrollers Questions Set 22:

Quiz Mode

To come out of idle mode, which external interrupt(s) can be used?

INT0

INT1

SI (serial)

All of the above

Solution:

A given memory chip has 12 address pins and 4 data pins. What is the capacity of the memory chip?

12K

16K

Solution:

`MOV A , #A5H`

`ORL A, #62H`

Complete the above code such the final value in register A is E7H.

CPL A

XRL A, #43H

ANL A, A

ORL A, #62H

Solution:

In which of the following registers can we find the TF0 (Timer 0 Overflow) flag ?

PSW Register

TMOD Register

SCON Register

TCON Register

Solution:

Which of the following instructions in the instruction set of 8051 microcontroller changes the values in one of the operands ?

JNZ

DJNZ

Solution:

Which addressing mode is used only with the LCALL and LJMP instructions ?

Long addressing

Indexed based addressing

Drect addressing

Solution:

What are the registers used for multiplication instructions in the 8051 microcontroller?

Accumulator and C register

Stack pointer

Accumulator and B register

Program counter

Solution:

In mode 0 what is the baud rate of the 8051 microcontroller?

1/12 of the oscillator frequency

1/32 of the oscillator frequency

1 /64 of the oscillator frequency.

Its determined by the timer 1

Solution:

Identify the addressing mode used in the given assembly language instruction:

`MOV A, @R5`

Direct Addressing Mode

Indexed Addressing Mode

Solution:

When PSEN is high, the 64 KB of internal program memory gets split up into two parts of sizes ____KB

16 KB , 48 KB

64 KB , 0 KB

60 KB, 4 KB

32 KB , 32 KB

Microcontrollers Questions Set 22:

To come out of idle mode, which external interrupt(s) can be used?

Solution:

A given memory chip has 12 address pins and 4 data pins. What is the capacity of the memory chip?

Solution:

`MOV A , #A5H`

`ORL A, #62H`

Complete the above code such the final value in register A is E7H.

Solution:

In which of the following registers can we find the TF0 (Timer 0 Overflow) flag ?

Solution:

Which of the following instructions in the instruction set of 8051 microcontroller changes the values in one of the operands ?

Solution:

Which addressing mode is used only with the LCALL and LJMP instructions ?

Solution:

What are the registers used for multiplication instructions in the 8051 microcontroller?

Solution:

In mode 0 what is the baud rate of the 8051 microcontroller?

Solution:

Identify the addressing mode used in the given assembly language instruction:

`MOV A, @R5`

Solution:

When PSEN is high, the 64 KB of internal program memory gets split up into two parts of sizes ____KB

Solution:

Related Question Sets:

Related Topics:

Microcontrollers Questions Set 22:

To come out of idle mode, which external interrupt(s) can be used?

Solution:

A given memory chip has 12 address pins and 4 data pins. What is the capacity of the memory chip?

Solution:

MOV A , #A5H ORL A, #62H Complete the above code such the final value in register A is E7H.

Solution:

In which of the following registers can we find the TF0 (Timer 0 Overflow) flag ?

Solution:

Which of the following instructions in the instruction set of 8051 microcontroller changes the values in one of the operands ?

Solution:

Which addressing mode is used only with the LCALL and LJMP instructions ?

Solution:

What are the registers used for multiplication instructions in the 8051 microcontroller?

Solution:

In mode 0 what is the baud rate of the 8051 microcontroller?

Solution:

Identify the addressing mode used in the given assembly language instruction: MOV A, @R5

Solution:

When PSEN is high, the 64 KB of internal program memory gets split up into two parts of sizes ____KB

Solution:

Related Question Sets:

Related Topics:

`MOV A , #A5H`

`ORL A, #62H`

Complete the above code such the final value in register A is E7H.

Identify the addressing mode used in the given assembly language instruction:

`MOV A, @R5`