//通過18B20檢測的數字溫度可在電腦上顯示當前溫度值
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit DS=P2^2 //define interface
uint temp // variable of temperature
uchar flag1 // sign of the result positive or negative
sbit dula=P2^6
sbit wela=P2^7
