Explain line by line the source code given to see how the memory usage and

data are transferred to the specific addresses. The code:

$.$MODEL SMALL

$.$STACK $100$H

$.$DATA

PROMPT$\_1$ DB 'Enter the First digit : $$\text{'}$

PROMPT$\_2$ DB 'Enter the Second digit : $$\text{'}$

PROMPT$\_3$ DB 'Sum of First and Second digit : $$\text{'}$

$.$CODE

MAIN PROC

MOV AX$,$ @DATA

MOV DS$,$ AX

LEA DX$,$ PROMPT$\_1$

MOV AH$,9$

INT $21$H

MOV AH$,1$

INT $21$H

MOV BL$,$ AL

SUB BL$,30$H

MOV AH$,2$

MOV DL$,0$DH

INT $21$H

MOV DL$,0$AH

INT $21$H

LEA DX$,$ PROMPT$\_2$

MOV AH$,9$

INT $21$H

MOV AH$,1$

INT $21$H

MOV BH$,$ AL

SUB BH$,30$H

MOV AH$,2$

MOV DL$,0$DH

INT $21$H

MOV DL$,0$AH

INT $21$H

LEA DX$,$ PROMPT$\_3$

MOV AH$,9$

INT $21$H

ADD BL$,$ BH

ADD BL$,30$H

MOV AH$,2$

MOV DL$,$ BL

INT $21$H

MOV AH$,4$CH

INT $21$H

MAIN ENDP

END MAIN