;taking 16 bit number input
    mov ah,01h
    int 21h
    mov bh,al
    mov cl,4
    shl bh,cl

    mov ah,01h
    int 21h
    mov cl,4
    shl al,cl
    mov cl,4
    ror al,cl
    or bh,al

    mov ah,01h
    int 21h
    mov bl,al
    mov cl,4
    shl bl,cl

    mov ah,01h
    int 21h
    mov cl,4
    shl al,cl
    mov cl,4
    ror al,cl
    or  bl,al
    ;taking 16 bit number input


    ;displaying number in dos
    mov     ax,bx
mov     bx,10
    xor     cx,cx
  .a:
    xor     dx,dx
    div     bx
    push    dx
    inc     cx
    test    ax,ax
    jnz     .a
 .b:
    pop     dx
    add     dl,"0"
    mov     ah,02h
    int     21h
    loop    .b
exit:
   mov ah,4ch
   int 21h
   main endp
   end main