Which statement best describes the function of the MOV instruction in the 8051 microcontroller?
It transfers data from a source to a destination register or memory location
In the 8051, MOV is a data-transfer instruction with the form MOV destination, source. It copies the source byte into the destination; the source is left unchanged.
Examples: MOV A, R0 (register to accumulator), MOV A, #25H (immediate data to A), MOV 30H, A (A to internal RAM location 30H).
Arithmetic between registers is done by ADD, ADDC, SUBB, MUL and DIV, not MOV.
Bit shifting of the accumulator is done by rotate instructions such as RL, RR, RLC and RRC.
External interrupts are enabled by setting bits in the IE register, e.g. SETB EX0 and SETB EA.
Hence, the answer is It transfers data from a source to a destination register or memory location.
Similar Questions
A designer is developing an 8051-based embedded system that requires storage of a large amount of frequently changing data exceeding the internal RAM capacity, while keeping the program code unchanged. Which memory configuration is most suitable?
Which addressing mode in the 8051 microcontroller allows data to be accessed through an address stored in a register (such as R0, R1, or DPTR)?
Important Questions from Microprocessors and Microcontrollers
Data and address bus width of 8085 microprocessor respectively are
How many bits are used in the data bus of 8051 ?
- Which of the 8051 ports need pull-up resistors to function as an I/O port?
How many bytes are used by the given data directive of the 8051 microcontroller?
DATA_1 DB "INDIA"
A. Microcontrollers are normally less expensive than microprocessors.
B. The 8051 microcontroller has three on-chip timers.
C. Mode 2 of 8051 timer is used to set the baud rate.
D. For the LCD to recognize information at the data pins as data, the register select (RS) pin must be set to low.
E. A driver must be placed between the micrcontroller and the stepper motor.
Choose the correct answer from the options given below:
