led.c

LED显示

#include <at89x51.h>
void delay(unsigned int e)
{
 unsigned int i,j;
 for(i=0;i<e;i++)
      {
	  for(j=0;j<60;j++);
	  }
}
void main()
{
 P1=0XF9;
 P2=0Xfe;
 delay(100);
}