Assuming the program is for an 8-bit microcontroller, here is one possible solution in 8051 assembly language:
MOV A, #27 ; Load an arbitrary number (e.g. 27) into AL
ANL A, #01 ; Check the least significant bit to determine odd/even
JZ even_num ; Jump to even_num subroutine if A is even
inc_num: ADD A, #01 ; Increment A to make it an even number
MOV P0, A ; Show the result on port 0
SJMP end_prog ; Jump to the end of program
even_num: SUBB A, #01 ; Decrement A to make it an odd number
MOV P0, A ; Show the result on port 0
end_prog: RET ; End of program
This program first loads an arbitrary number (27) into AL using the MOV instruction. It then uses the ANL instruction (bitwise AND) with the immediate value 0x01 (binary 00000001) to check the least significant bit of AL. If the result is zero (i.e. AL is even), it jumps to the even_num subroutine. Otherwise, it continues to the next instruction, which increments AL by 1 using ADD. This makes AL an even number because the least significant bit is set to 0. The result is then shown on port 0 using the MOV instruction.
If AL was even and the program jumped to the even_num subroutine, it uses the SUBB instruction (subtraction with borrow) with the immediate value 0x01 to decrement AL by 1. This makes AL an odd number because the least significant bit is set to 1. The result is then shown on port 0 using the MOV instruction.
Finally, the program ends with a RET (return) instruction. Note that this program assumes that the trainer kit has an 8-bit output port named P0, which can display the result in binary. The program also does not handle overflow or underflow of AL, which could occur if the input number is close to the maximum or minimum value of the microcontroller. These edge cases would require additional checks and error handling.
Write an assembly program that:
- Load AL by an arbitrary number,
- Check whether it is an odd/even number,
- If it is an odd number, it will be converted to its next larger even number and will be shown in port 0 in the trainer kit.
- If it is an even number, it will be converted to its previous smaller odd number and will be shown in port 0 in the trainer kit.
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