说明：  带串口调试的读写ds18B20程序,方便作保时候读取温度数据,拿过自动化智能控制大赛一等奖的源程序,不可多得的佳作
(With serial debugging DS18B20 to read and write procedures for the time to read temperature data secured, automated intelligent control contest won the first prize of the source, rare works)