基于18B20的51单片机温度控制器实例，采用汇编语言编写，可以设置上限温度和下限温度，温度超限会发出报警信息。-18B20 single chip microcomputer-based temperature controller of the 51 examples of the preparation of the use of assembly language, you can set the upper limit temperature and the minimum temperature, the temperature gauge will issue warning messages.