#include<reg52.h>
#include <intrins.h>
#define uint unsigned int 
#define uchar unsigned char 
uchar temp,num,num1;
sbit beep=P2^3;
void delay(uint);

void main()
{
		
        
	while(1)
	{
		temp=0xff;
		for(num1=0;num1<8;num1++)
		{
			temp=temp<<1;//注意區別_crol_命令
			for(num=0;num<8;num++)
			{
				P1=temp;
				beep=0;
				temp=_crol_(temp,1);
				delay(500);
				P1=0xff;
				beep=1;
				if(temp!=0x00);
					else break;					
				delay(500);					
			}
		}	
		temp=0xff;
		for(num1=0;num1<8;num1++)
		{
			temp=temp>>1;
			for(num=0;num<8;num++)
			{
				P1=temp;
				beep=0;
				temp=_cror_(temp,1);
				delay(500);				
				P1=0xff;
				beep=1;
				delay(500);
				if(temp!=0x00);
					else break;
						
			}
		}
	}
}

void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);	
}