Why is it not displaying a number on the screen?

Question

assembler

Printing a string is not a problem, there are a lot of tutorials, but something strange happens with a number. Instead of a number, it displays krakozyabry

SECTION .DATA
  x:         dq 0x12345678

SECTION .TEXT
  GLOBAL _start 

_start:
  mov eax,4            ; 'write' system call = 4
  mov ebx,1            ; file descriptor 1 = STDOUT
  mov ecx,x             ;write car
  mov edx,32          ; length of string to write
  int 80h                  ; call the kernel
  
  ; Terminate program
  mov eax,1            ; 'exit' system call
  mov ebx,0            ; exit with error code 0
  int 80h              ; call the kernel

Answer 1

By itself. The number is in binary form, but to print the numbers, you need ASCII codes:
db 0x31, 0x32, 0x33 ... 0x38
Write your itoa () in assembler - the code that will translate the number into a string. The algorithm is elementary

Answer 2

And what do you expect to get from a function that outputs a string if you pass it an address that is not a string.
Naturally, the function interprets the data at the passed address as a string, that is, a sequence of character codes.
If you want to output a number, first convert it to a string.