setting_DS1307[2]=hours;
               setting_DS1307[1]=minutes;
               setting_DS1307[0]=seconds;
               setting_DS1307[4]=day;
               setting_DS1307[3]=week;
               setting_DS1307[5]=month;
               setting_DS1307[6]=year;

static void set_DS1307(unsigned  char set_switch,unsigned  char inc_dec_system_12_24)
 {
   if(set_switch==0)// start value
              {
               setting_DS1307[2]=hours;
               setting_DS1307[1]=minutes;
               setting_DS1307[0]=seconds;
               setting_DS1307[4]=day;
               setting_DS1307[3]=week;
               setting_DS1307[5]=month;
               setting_DS1307[6]=year;
              }
   if(set_switch==8)//write new data to DS1307
                   {
                     if(inc_dec_system_12_24==24)kw_12_24=24;
                     else if(inc_dec_system_12_24==12)kw_12_24=12;
                     Show_Time(setting_DS1307[2],setting_DS1307[1],setting_DS1307[0],setting_DS1307[4],
                               setting_DS1307[3],setting_DS1307[5],setting_DS1307[6],0);
                   }
   if (inc_dec_system_12_24==0) // inc switch
                       {
                        setting_DS1307[set_switch-1]++;
                        if(setting_DS1307[2]>=24)setting_DS1307[2]=23;// houres
                        if(setting_DS1307[1]>=60)setting_DS1307[1]=59;// minute
                        if(setting_DS1307[0]>=60)setting_DS1307[0]=59;// second ,
                        if(setting_DS1307[4]>=32)setting_DS1307[4]=31;// days
                        if(setting_DS1307[3]>=8)setting_DS1307[3]=7;// week
                        if(setting_DS1307[5]>=13)setting_DS1307[5]=12;// month
                        if(setting_DS1307[6]>=99)setting_DS1307[6]=99;// year
                       }
   if (inc_dec_system_12_24==1) // dec switch
                         {
                          if(setting_DS1307[set_switch-1]>0)setting_DS1307[set_switch-1]--;
                          if(setting_DS1307[4]==0)setting_DS1307[4]=1;// days
                          if(setting_DS1307[3]==0)setting_DS1307[3]=1;// week
                          if(setting_DS1307[5]==0)setting_DS1307[5]=1;// month
                         }

}