51单片机 04动态数码管

#include <reg52.h>

sbit lsa = P2^2;
sbit lsb = P2^3;
sbit lsc = P2^4;

unsigned int sdf[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

void delay(unsigned int i)
{
	while(i--);
}

void dffff(void)
{
    unsigned int i;
	for(i = 0;i < 8; i++)
	{
		switch(i)
		{
			case 0:lsa = 0;lsb = 0;lsc = 0;break;
			case 1:lsa = 1;lsb = 0;lsc = 0;break;
			case 2:lsa = 0;lsb = 1;lsc = 0;break;
			case 3:lsa = 1;lsb = 1;lsc = 0;break;
			case 4:lsa = 0;lsb = 0;lsc = 1;break;
			case 5:lsa = 1;lsb = 0;lsc = 1;break;
			case 6:lsa = 0;lsb = 1;lsc = 1;break;
			case 7:lsa = 1;lsb = 1;lsc = 1;break;
		}
		P0 = sdf[i];
		delay(50000);
		P0 = 0x00;
     }
}

void main()
{
	while(1)
	{
		dffff();
	}
}