51单片机实现年月日时分秒电子钟C程序

#include"reg51.h"    //定义51头文件
#define uchar unsigned char     //定义一下方便使用  
#define uint unsigned int
uchar disp[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};  //数码管显示0-9;
uint count=0,sh=0, second=0,temp;    //定义变量
uint min=59,sec=00;
uint g;
uint year=2009,year_s=20,year_g=9;
uint yue_g=6,yue_s=6,hour=11;
uchar min_g,min_s,sec_g,sec_s;
uchar clock_min=12,clock_sec=01;
uchar clock_min_s,clock_min_g,clock_sec_s,clock_sec_g;   
uint qiehuan=0;
sbit g1=P2^4;    //位定义
sbit g2=P2^5; 
sbit g3=P2^6;
sbit g4=P2^7;
sbit s1=P3^2;
sbit s2=P3^3;
sbit s3=P3^4;
sbit s4=P3^5;
sbit led1=P1^0;
sbit led2=P1^1;
sbit led8=P1^7;
sbit led3=P1^2;
sbit led4=P1^3;
delay(uint k)   //延时函数
    {
     uint i,j;
      for(i=0;i<k;i++)

         for(j=0;j<100;j++)
 ;
    }
jia(uint t)    //加一
   {
    if(s2==0)
      {
      delay(10);
      if(s2==0)
         {
     t++;
         while(!s2);
     }
      }
     return t;
    }
jian(uint t)    //减一
    {
     if(s3==0)
       {
       delay(10);
       if(s3==0)
          {
      t--;
          while(!s3);
      }
       }
      return t;
     }