静态数码管显示

1.通过138译码器选中要亮的灯

2.74HC245：缓冲器；根据断码数据选择口

#include <REGX52.H>

void main()
{
    P2_4=1;
    P2_3=0;
    P2_2=1;//B5->LED6(点亮第6个灯);5->101(转化为二进制)
    P0=0x7D;
    while(1)
    {
    }
}

#include <REGX52.H>

unsigned char NixieTable[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71,0x00}

void Nixie(unsigned char Location,Number)
{
    swtich(Location)
    {
        case 1:P2_4=1;P2_3=1;P2_2=1;break;
        case 2:P2_4=1;P2_3=1;P2_2=0;break;
        case 3:P2_4=1;P2_3=0;P2_2=1;break;
        case 4:P2_4=1;P2_3=0;P2_2=0;break;
        case 5:P2_4=0;P2_3=1;P2_2=1;break;
        case 6:P2_4=0;P2_3=1;P2_2=0;break;
        case 7:P2_4=0;P2_3=0;P2_2=1;break;
        case 8:P2_4=0;P2_3=0;P2_2=0;break;
    }
    P0=NixieTable[Number];
}

void main()
{
    Nixie(7,2);
    while(1)
    {
    }
}

 动态数码管显示

#include <REGX52.H>

unsigned char NixieTable[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71,0x00}


void Delay(unsigned int xms)
{
    unsigned char i, j;
    while(xms)
    {
        i = 2;
        j = 239;
        do
        {
           while(--j);
        }while(--i);
        xms--;
    }
    
}

void Nixie(unsigned char Location,Number)
{
    swtich(Location)
    {
        case 1:P2_4=1;P2_3=1;P2_2=1;break;
        case 2:P2_4=1;P2_3=1;P2_2=0;break;
        case 3:P2_4=1;P2_3=0;P2_2=1;break;
        case 4:P2_4=1;P2_3=0;P2_2=0;break;
        case 5:P2_4=0;P2_3=1;P2_2=1;break;
        case 6:P2_4=0;P2_3=1;P2_2=0;break;
        case 7:P2_4=0;P2_3=0;P2_2=1;break;
        case 8:P2_4=0;P2_3=0;P2_2=0;break;
    }
    P0=NixieTable[Number];
    Delay(1);
    P0=0x00;//位选-段位-清零
}

void main()
{

    while(1)
    {
    Nixie(1,1);
    Delay(200);
    Nixie(2,2);
    Delay(200);
    Nixie(3,3);
    Delay(200);
    }
}