w2.c

51单片机LED程序

//循环左移
/**************************************************/
#include "reg51.h"
#include "intrins.h"
#define uchar unsigned char
#define uint unsigned int
/*延时程序
由Delay 参数确定延迟时间
*/
void mDelay(unsigned int Delay)
{ unsigned int i;
for(;Delay>0;Delay--)
{ for(i=0;i<124;i++)
{;}
}
}
void main()
{ unsigned char OutData=0xfe;
for(;;)
{
	P1=OutData;
	OutData=_crol_(OutData,1); //循环左移
	mDelay(1000); /*延时1000 毫秒*/
}
}