51普中动态数码管求大佬指导

switch里面被注释掉的可以正常显示，没被注释掉的每隔一个数码管不显示
#include <REGX52.H>
#include "Delay.h"

unsigned char shumaguanshuzi[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void shumaguan(unsigned char location,number)
{
    switch(location)
    {
            case 1:P2_4=1;P2_3=1;P2_1=1;break;
            case 2:P2_4=1;P2_3=1;P2_1=0;break;
            case 3:P2_4=1;P2_3=0;P2_1=1;break;
            case 4:P2_4=1;P2_3=0;P2_1=0;break;
            case 5:P2_4=0;P2_3=1;P2_1=1;break;
            case 6:P2_4=0;P2_3=1;P2_1=0;break;
            case 7:P2_4=0;P2_3=0;P2_1=1;break;         
            case 8:P2_4=0;P2_3=0;P2_1=0;break;
//        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=shumaguanshuzi[number];

}
void main()
{

    while(1)
    {
        shumaguan(1,3);
        Delay(200);
        shumaguan(2,3);
        Delay(200);
        shumaguan(3,3);
        Delay(200);
        shumaguan(4,3);
        Delay(200);
    }
   
}