7. CASE CONVERSION A10 B11 ETC.asm

.MODEL SMALL
.STACK 100H 
.DATA

VAR DB ?

.CODE
MAIN PROC

    MOV AX,@DATA
    MOV DS,AX
    
    MOV AH,1
    INT 21H
    MOV VAR,AL
    
    MOV AH,2
    MOV DL,'1'
    INT 21H
    SUB VAR,17
    MOV DL,VAR
    INT 21H
    
    

MOV AH,4CH
INT 21H
MAIN ENDP
END MAIN