Convert capital alphabet to small and small to capital alphabet

Write a program that convert capital alphabet to small and small to capital alphabet

Program/Code:

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org 100h MOV AH, 1 INT 21H add al,20h mov ah, 2 mov dl, al ;take output a character ;and show it by dl int 21h mov dl, 0Dh int 21h mov dl, 0Ah int 21h mov ah, 1 int 21h sub al,20h mov ah, 2 mov dl, al ;take output a character ;and show it by dl int 21h ret

Output/Result: