单片机C51 8位流水灯

#include<reg51.h>

sbit P1_0=0X90;

sbit P1_1=0x91;

sbit P1_2=0x92;

sbit P1_3=0x93;

sbit P1_4=0x94;

sbit P1_5=0x95;

sbit P1_6=0x96;

sbit P1_7=0x97;

void stop(void);

void delay(unsigned int xms);

int main(void)

{

	int i=2;

	P1=~0;

	for(i;i>0;i--)

		{

					P1_0=0;

			    delay(500);

			    P1_0=1;

			    delay(100);

				  P1_1=0;

			    delay(500);

			    P1_1=1;

			    delay(100);

					P1_2=0;

			    delay(500);

			    P1_2=1;

			    delay(100);

				  P1_3=0;

			    delay(500);

			    P1_3=1;

			    delay(100);

				  P1_4=0;

			    delay(500);

			    P1_4=1;

			    delay(100);

				  P1_5=0;

			    delay(500);

			    P1_5=1;

			    delay(100);

				  P1_6=0;

			    delay(500);

			    P1_6=1;

			    delay(100);

				  P1_7=0;

			    delay(500);

			    P1_7=1;

			    delay(100);

    }

		stop();

		return 0;

}

void stop(void)

{

	while(1)

	{;}

}

void delay(unsigned int xms)

{

	unsigned int x,y;

	for(x=xms;x>0;x--)

	   for(y=110;y>0;y--);

}