Addition of two number by taking input and display output

Write a program that takes two number by user input and display output

Program/Code:

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org 100h mov ah, 1 int 21h ;take input a character ;and store it in al mov bl, al int 21h ;take input a character ;and store it in al sub al, 30h sub bl, 30h add al, bl mov ah, 2 add al, 30h mov dl, al ;take output a character ;and show it by dl int 21h ret ;Output 437 first two is input by user third one is output