说明：  51但单片机实现对18B20的控制功能,此程序仅共参考,不一定准确，就算给大家一个"例程"吧，如果大家有不同意见，希望多多指正！
(51 18B20 MCU to the control function, this procedure has only reference is not necessarily accurate. Even if everyone with a "routine" for the country, if we have different views to those corrected!)