ダイナミックディジタルディスプレイ

#include<reg51.h>
#include <intrins.h>

/*0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f   */
unsigned char code num[]= {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
/*        */
unsigned char mytime[]= {0x00,0x00,0x40,0x00,0x00,0x40,0x00,0x00};
/*138         */
sbit ls1=P1^2;
sbit ls2=P1^1;
sbit ls3=P1^0;
/*  xms  */
void delayxms(unsigned int xms)
{
    unsigned int i,j;
    for(i=0; i<xms; i++)
        for(j=0; j<110; j++);
}
/*         */
void display()
{
    int i;
    for(i=0; i<8; i++)//    
    {
        switch(i)   //    
        {
        case(0):
            ls1=0,ls2=0,ls3=0;
            break;
        case(1):
            ls1=0,ls2=0,ls3=1;
            break;
        case(2):
            ls1=0,ls2=1,ls3=0;
            break;
        case(3):
            ls1=0,ls2=1,ls3=1;
            break;
        case(4):
            ls1=1,ls2=0,ls3=0;
            break;
        case(5):
            ls1=1,ls2=0,ls3=1;
            break;
        case(6):
            ls1=1,ls2=1,ls3=0;
            break;
        case(7):
            ls1=1,ls2=1,ls3=1;
            break;
        }
        P0=mytime[i];//  ： i       i   
        delayxms(1);
        P0=0x00; //  
    }
}

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