assembly language program for the 8051 microcontroller that will arrange a block of ten numbers in ascending order using the bubble sort algorithm:
```assembly ; Initialize data memory addresses MOV DPTR, #4000H ; Point DPTR to the starting address of the array MOV R0, #10 ; Set the counter for the outer loop to 10 outer_loop: MOV R1, #09 ; Set the counter for the inner loop to 9 inner_loop: MOV A, @DPTR ; Load the current element into the accumulator MOV B, A ; Copy the current element to register B INC DPTR ; Move DPTR to the next element MOV A, @DPTR ; Load the next element into the accumulator CJNE A, B, no_swap ; Compare the elements and skip swap if they are in order ; Swap the elements MOV @DPTR, B ; Move the next element to the current position DEC DPTR ; Move DPTR back to the current element MOV @DPTR, A ; Move the current element to the next position no_swap: DJNZ R1, inner_loop ; Decrement the inner loop counter and repeat if not zero DJNZ R0, outer_loop ; Decrement the outer loop counter and repeat if not zero ; End of sorting, the array is now arranged in ascending order ; You can perform further operations or display the sorted array as needed ; End of program END ```
Please note that the above program assumes that the array of ten numbers is stored in the data memory starting from address 4000H. You can adjust the starting address according to your needs. Additionally, you can implement other sorting algorithms like quicksort or insertion sort if desired, depending on the complexity and requirements of your application. Happy coding!