C51学习

2、8个二极管来回亮，每次亮蜂鸣器滴滴两声；

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uint x,y,z;
uchar temp;
sbit b=P2^3;
void delay(uint);
void main()
{
temp=0xfe;
P1=temp;
while(1)
{
b=0;
delay(100);
b=1;
delay(100);
b=0;
delay(100);
b=1;
delay(620);
temp=_crol_(temp,1);
P1=temp;
}
}
void delay(uint z)
{
for(x=z;x>0;x--)
for(y=100;y>0;y--);
}