ASSEMBLY LANGUAGE

.MODEL SMALL
.STACK 100H
.CODE
.DATA
MSG1 DB 'Enter:$'

MAIN PROC
    ;REPRESENT TO DATA SEGMENT
    MOV AX,@DATA
    MOV DS,AX
    ;FOR DISPLAY MESSAGE
    LEA DX,MSG1
    MOV AH,9
    INT 21H


    ;INPUT
    MOV AH,1
    INT 21H
    MOV BL,AL

    ;ADDITION
    MOV AL,BL
    ADD AL,5;AL=AL+5
    MOV BL,AL

    COMMENT @
    SUBTRACTION
    MOV AL,BL
    SUB AL,1;AL=AL-1
    MOV BL,AL
    @

    ;OUTPUT
    MOV AH,2
    ;FOR NEW LINE AND CRET
    MOV DL ,0DH
    INT 21H
    MOV DL,0AH

    COMMENT @

    ;FOR FACE

    MOV DL,001
    INT 21H
    MOV DL,BL
    INT 21H
    @

    ;CLEAR SCREEN
    EXIT:
    MOV AH,4CH
    INT 21H

MAIN ENDP
END MAIN