说明：  18B20单线温度检测的应用样例程序,请将18b20插紧， 然后在数码管可以显示XX.XC，C表示摄氏度，如显示25.3C表示当前温度25.3度 开发板使用11.0592M晶振 串口测温软件 选择对应的com口
(18B20 single sample temperature measurement application procedures, please 18b20 seated, and then in the digital control can display XX.XC, C said degrees Celsius, such as the display indicates the current temperature of 25.3 degrees 25.3C development board serial port using 11.0592M crystal temperature measurement software select the appropriate com port)