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Program To Convert Decimal number to Binary number

Posted By: Oliver Evans     Category: Assembly Language     Views: 14867

Write a Program To Convert Decimal number to Binary number.

Code for Program To Convert Decimal number to Binary number in Assembly Language

prnstr macro msg
        mov ah, 09h
        lea dx, msg
        int 21h
        endm

data segment
        buf1 db "Enter a decimal number : $"
        buf2 db 0ah, "Invalid Decimal Number...$"
    buf3 db 0ah, "Equivalent Binary number is : $"
        buf4 db 6
             db 0
             db 6 dup(0)
        multiplier db 0ah
data ends

code segment
        assume cs:code, ds:data
start :
        mov ax, data
        mov ds, ax
        mov es, ax

        prnstr buf1

        mov ah, 0ah
        lea dx, buf4
        int 21h

        mov si, offset buf4 + 2
        mov cl, byte ptr [si-1]
        mov ch, 00h
subtract :
        mov al, byte ptr [si]
        cmp al, 30h
        jnb cont1
        prnstr buf2
        jmp stop
cont1 :
        cmp al, 3ah
        jb cont2
        prnstr buf2
        jmp stop
cont2 :
        sub al, 30h
        mov byte ptr [si], al

        inc si
        loop subtract

        mov si, offset buf4 + 2
        mov cl, byte ptr [si-1]
        mov ch, 00h
        mov ax, 0000h
calc :
        mul multiplier
        mov bl, byte ptr [si]
        mov bh, 00h
        add ax, bx
        inc si
        loop calc

        mov si, offset buf4 + 2
        mov bx, ax
        mov dx, 0000h
        mov ax, 8000h
convert :
        mov cx, 0000h
conv :
        cmp bx, ax
        jb cont3
        sub bx, ax
        inc cx
        jmp conv
cont3 :
        add cl, 30h
        mov byte ptr [si], cl
        inc si
        mov cx, 0002h
        div cx
        cmp ax, 0000h
        jnz convert

        mov byte ptr [si], '$'
        prnstr buf3
        prnstr buf4+2
stop :
        mov ax, 4c00h
        int 21h
code ends
        end start

  
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Oliver Evans
Oliver Evans author of Program To Convert Decimal number to Binary number is from London, United Kingdom.
 
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