liushuideng.c

C51 程序练习

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
void delay (uint z);
uchar temp;
void main()
{
	temp=0xfe;
	P2=temp;
	while(1)
	{
		temp=_crol_(temp,1);
		delay(600);
		P2=temp;
	}
}
void delay(uint z)
{
	uint x,y;
	for(x=100;x>0;x--)
		for(y=z;y>0;y--);
}