#include <AT89X51.H>
#include <stdio.h>

void main(void)
{
	SCON = 0x50; //串口方式1,允許接收
	TMOD = 0x20; //定時(shí)器1定時(shí)方式2
	TCON = 0x40; //設(shè)定時(shí)器1開始計(jì)數(shù)
	TH1 = 0xE8;	//11.0592MHz 1200波特率
	TL1 = 0xE8;
	TI = 1;
	TR1 = 1; //啟動(dòng)定時(shí)器

	
	while(1)
		{
			printf ("Hello World!\n"); //當(dāng)P1.1為低時(shí)顯示Hello World
		}
}