单片机C语言

11H490

include<AT89X51.H>
#include<stdio.h>
void main(void)
{
ss    SCON =0x50;
TMOD =0x20;
TCON =0X40;
TH1 =0xE8;
TL1 =0xE8;
T1 =1;
TR1 =1;
while(1)
     {
printf        ("Hello word!\n");
     }
}