//8个发光管来回流动，每个管亮100ms，流动时蜂鸣器发出"滴滴"声

#include <intrins.h>
#include <reg52.h>

#define uint unsigned int
#define uchar unsigned char

void delay(uint);

uchar temp,temp2;
sbit beep=P2^3;

void main()
{
 
temp=0xfe;
beep=0;
P1=temp;

while(1)
{
 delay(15);
 temp=_crol_ (temp,1);
 beep=0;
 P1=temp;
}
}

void delay(uint z)
{
uint x, y;
beep=1;
for(x=z;x>0;x--)
 for(y=765;y>0;y--) {}
}