Lighting Up a Running Light with Right Shift Operations on the 51 Microcontroller

According to the principle of the running light, the IO port outputs a low level sequentially from low to high or from high to low.1. Experimental Wiring DiagramCode:Delay function:

void delay(void)//Delay for a period of time{ unsigned int n;  for(n=0;n<30000;n++)      ;}

main function:

void main(void){    unsigned char i;  while(1) {       P1=0xff;//Initialize P1           delay();            for(i=0;i<8;i++)//Set loop count to 8         {           P1=P1>>1;   //Right shift each bit of P1 by 1, high bits filled with 0                  delay();    //Call delay function         }    }}