（5）单片机动态数码管

#include <reg52.h>
typedef unsigned char u8;
typedef unsigned int u16;

sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;

unsigned char smgduan [16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};


void delay(u16 i)
{
	while(i--);
}

void digdisplay()
{
u8 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=smgduan[i+1];
		delay(100);
		P0=0x00;
	}
}
void main()
{
	while(1)
	{
	digdisplay();
	}
}