//-------------------------------------------------------
void main(void) //主函数
   {  
       DDRA = 0xff; PORTA = 0xff;
       DDRD = 0xff; PORTD.5 = 1;    
       while(1)//循环
             {
                 if(PIND.5 != 1) //按下了PD5键?
                 delay_ms(5);
                 if(PIND.5 != 1)
                     {
                           display();
                           count ++; //数加1
                           if(count == 10000) //是否计满了1万?
                           count = 0; //清零
                       }
                 display();
             }
   }