void Timer0() interrupt 1
{
	count++;
	if(count==3)//countڵֵռձȾ嶨ǰٷ֮30ĳ
	{
		P34=~P34;
	}
	if(count==10)
	{
		count=0;
		P34=~P34;
	}
}

void timer_chu() //3333΢@12.000MHz          óֵҪƵ
{
	AUXR &= 0x7F;		//ʱʱ12Tģʽ
	TMOD &= 0xF0;		//öʱģʽ
	TL0 = 0xA4;		//öʱֵ
	TH0 = 0xFF;		//öʱֵ
	TF0 = 0;		//TF0־
	TR0 = 1;		//ʱ0ʼʱ

}