assembly - How to recognize cpu brand name in c/assembler by cpuid instruction -

i have no idea how should program work, found codes don't understand them, if here kind , had program explain me?

#include <stdio.h>  #include <string.h> int main() { char name[13];  __asm { xor eax,eax cpuid mov dword ptr [name], ebx mov dword ptr [name+4], edx mov dword ptr [name+8], ecx  } name[12]=0; printf("procesor: %s\n", name); getchar(); return 0; } 

the cpuid instruction tells various things cpu depending on content of eax register. when eax contains zero, registers ebx, edx, , ecx contain string describing processor's vendor. code have pulls string registers , prints out.

read wikipedia further details on cpuid.