Question

write an assembler program that will define three variables
   in01     DEC   0  
   in02   DEC   0
   sum   dec   0

input a number and save in in01
input a second number and save in in02

add the 2 numbers input and storwe the sum in sum

output in01
output in02
output sum

Answer 1

DATA SEGMENT
IN01 DB ?        ;declaring first element
IN02 DB ?        ;declaring second element
SUM DB ?         ;declaring sum element
MSG1 DB 10,13,"INPUT FIRST NUMBER : $"
MSG2 DB 10,13,"INPUT SECOND NUMBER : $"
MSG3 DB 10,13,"SUM OF TWO NUMBERS IS : $"
ENDS
CODE SEGMENT
ASSUME DS:DATA CS:CODE
START:
MOV AX,DATA
MOV DS,AX
LEA DX,MSG1        ;prompting user to enter first element
MOV AH,9
INT 21H
MOV AH,1
INT 21H
SUB AL,30H
MOV IN01,AL
LEA DX,MSG2           ;prompting user to enter second element
MOV AH,9
INT 21H
MOV AH,1
INT 21H
SUB AL,30H
MOV IN02,AL
ADD AL,NUM1
MOV SUM,AL
MOV AH,0
AAA
ADD AH,30H
ADD AL,30H
MOV BX,AX
LEA DX,MSG3           ;printing out the sum with a message sum of two numbers
MOV AH,9
INT 21H
MOV AH,2
MOV DL,BH
INT 21H
MOV AH,2
MOV DL,BL
INT 21H
MOV AH,4CH
INT 21H
ENDS
END START