基于单片机的温度检测，要求LCD显示。要求范围0-99度，精确到0.1度

你想用什么做呢？
我指的是传感器。

/*******************************************************************************
* LCD1602显示SHT10采集的温度和湿度,温度达上限，蜂鸣器报警 *
* 引用端口：p0,p2 控制1602液晶屏，P3.6 P3.7控制温度芯片，P3.5蜂鸣器 *
********************************************************************************/
#include<reg51.h>
#include <intrins.h>
#include <stdio.h>
#include <string.h>

#define uchar unsigned char
#define uint unsigned int

#define TEMPUP 80 //温度上限, 达到该温度蜂鸣器报警
typedef unsigned char BYTE;
typedef unsigned int WORD;
typedef bit BOOL ;
/*******************************************/
sbit buzzer = P3^5; //蜂鸣器
BOOL start;
/******************************************/

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// 1602相关控制信号及变量
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++