（求助）程序詳解圖

#include <reg51.H>
unsigned char code dispbit[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; //位碼
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66, 0x3F,/*0*/
                               0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40};
unsigned char dispbuf[8]={0,0,0,0,0,0,10,10};
unsigned char temp[8];
unsigned char dispcount;
unsigned char T0count;
unsigned char timecount;
bit flag;
unsigned long x;

void main(void)                           //主函數
{
  unsigned char i;
  TMOD=0x15;                              //T0T1方式1，T0計數
  TH0=0;
  TL0=0;
  TH1=(65536-4000)/256;
  TL1=(65536-4000)%256;
  TR1=1;                                  //啟動定時器1
  TR0=1;                                  //啟動定時器0
  ET0=1;                                  //允許定時器0中斷
  ET1=1;                                  //允許定時器1中斷
  EA=1;                                   //啟動總中斷
  while(1)
   {
      if(flag==1)
       {
         flag=0;
         x=T0count*65536+TH0*256+TL0;
         for(i=0;i<8;i++)
           {
             temp=0;
           }
         i=0;
         while(x/10)
           {
             temp=x%10;
             x=x/10;
             i++;
           }
         temp=x;
         for(i=0;i<6;i++)
           {
             dispbuf=temp;
           }
         timecount=0;
         T0count=0;
         TH0=0;
         TL0=0;
         TR0=1;
       }
   }
}