data    segment                         ; data segment. Keyword db means define byte. You can also define word (dw)
        numA    db  16                  ;Define first variable
        numB    db  06                  ;Define second variable
        StrMsg  db 'The answer is $'    ;return message to the user
        leng    db 1                    ;length of the charachters - this value will be overwritten
data    ends

                                        ; stack segment
stack1  segment stack
        db  100 dup(?)                  ; This is the stack of 100 bytes
stack1  ends


code    segment
        assume  cs:code, ds:data, ss:stack1

start:
                                        ;Perform initialization
        mov ax, data                    ;Put the starting address of the data segment into the ax register (must do this first)
        mov ds, ax                      ;Put the starting address of the data segment into the ds register (where it belongs)

        mov ax, stack1                  ;Put the starting address of the stack into the ax register (must do this first)
        mov ss, ax                      ;Put the starting address of the stack segment into the ss register (where it belongs)

mov al, numA        ;move numA to ax
    add al, numB        ;ax contains numa + numb
    mov dl, al          ;move result to dl for display

    lea dx, StrMsg      ;load message to display the result to the user
    mov ah, 9h          ;display string subroutine
    int 21h             ;interrupt for MS-DOS routine

    add dl, 30h         ;Add 30h for ASCII table offset
    mov ah, 2h          ;Store interrupt code in ah to display results in dl
    int 21h             ;display character in dl as translated by ascii code

mov ah, 4ch                     ;Set up code to specify return to dos
        int 21h                         ;Interpt number 21 (Return control to dos prompt)

code    ends

end     start