(单片机程序设计)51单片机控制2个数码管动态实现00到23

#include
#define uchar unsigned char;
uchar distab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};  //0到f
uchar number,dat,cnt=0;
void t0isr() interrupt 1
{
    TH0=(65536-10000)/256;
    TL0=(65536-10000)%256;
    cnt++;
    if(cnt>=100)
        {
        cnt=0;
        dat++;
        dat%=24;
        }
    number++;
    number%=2;
    switch(number)
    {
    case 0:P2=0x02;P0=distab[dat/10];
        break;
    case 1:P2=0x01;P0=distab[dat%10];
        break;
    default:break;
    }
}
 
main()
{
        TMOD=0x61;
        TH0=(65536-10000)/256;
        TL0=(65536-10000)%256;
        TR0=1;
        ET0=1;
        EA=1;
        while(1);
}