////////////////////
#include <stdio.h>
#include <intrins.h>
#include <reg51.h>
#include <math.h> 

static float extrdt;
static float extrsp;
//static int  extr0;
static int  lightnum;
unsigned char th,tl;
unsigned int d,dd;
//unsigned long   password;//開機密碼
//unsigned long   passnum;
static unsigned  int gao,di;
//bit  warn1=0;
//bit  warn2=0;
sbit high=P3^7;           //控制高位
sbit low=P3^0;            //控制低位
//sbit warnsg=P3^3;       //報警