#include<reg52.h>
 #define uint unsigned int
 #define uchar unsigned char
sbit led1=P1^7;
 uchar    led_discode[11]={0xc0,0xf9,0xa4,0xb0,0x99,
                       0x92,0x82,0xf8,0x80,0x90,0xff};
 uint num,k1num,number;
// uchar qian_bit,bai_bit,shi_bit,ge_bit;
 sbit k1=P1^0;
 void delay_ms(unsigned int ms)  //1ms延时
{
       uchar a;
       while(ms--)
    for(a=123;a>0;a--);
}

 void nint()               //初始化
 {
    TMOD = 0x01;
    TH0 =(65536-10000)/256;
    TL0 =(65536-10000)%256;
    EA = 1;
    ET0 = 1;
   // TR0 = 1;
//    P0=0xff;
//    P3=0x00;
 }  
 void led_display(uchar number )
{

    qian_bit=number/1000;
    P0=led_discode[qian_bit];                //显示千位
    P3=0Xe0;
    delay_ms(1);
    P3=0Xff;

    bai_bit=(number%1000)/100;
    P0=led_discode[bai_bit];                 //显示百位
    P3=0Xd0;
    delay_ms(1);
    P3=0Xff;
   
    shi_bit=(number%100)/10;
    P0=led_discode[shi_bit];                 //显示十位
    P3=0X7f;
    delay_ms(1);
    P3=0Xff;

    ge_bit =(number%10);
    P0=led_discode[ge_bit];                  //显示个位
    P3=0Xbf;
    delay_ms(1);
    P3=0Xff;
}
void keyscan()
{
   if(k1==0)
    {
      delay_ms(1);
      if(k1==0)
      {
       k1num++;
       while(!k1num);
       if(k1num==1)
       {
           TR0 = 1;
       }
       if(k1num==2)
       {
         TR0=0;
//         led1 = 0;
//         led_display(number);

       }
      }
    }
}
void main()
{
  nint();
  while(1)
  {
      uint i;
      for(i=0;i<30;i++)
      {   
              keyscan();
              led_display(number);
      }
  }


}

 void Timer0Interrupt(void) interrupt 1
{
    TH0 =(65536-10000)/256;
    TL0 =(65536-10000)%256;
    num++;
    //led1 = 0;
    if(num==1)
    {
      num=0;
      ge_bit++;
      if(ge_bit==10)
      {
          ge_bit=0;
        shi_bit++;
        if(shi_bit==10)
        {
          shi_bit=0;
          bai_bit++;
          if(bai_bit==10)
          {
              bai_bit=0;
            qian_bit++;
            if(qian_bit==6)
            {
              qian_bit=0;
            }
        //    qian_bit=number/1000;
           // led_display(qian_bit);
          }
          //    bai_bit=(number%1000)/100;
          // led_display(bai_bit);
        }
           //    shi_bit=(number%100)/10;
          // led_display(shi_bit);
      }
         //    ge_bit =(number%10);
    //     led_display(ge_bit);
   
    }
}