用51单片机为MCU，分别以18B20、DS1302、LCD1602为温度、时间采集和显示器件。可通过串口上传当前温度，间隔约为14s，也可以由串口下发温度上下限值，发送时为6个字符，前三个为下限，后三个为上限，温度范围为18B20 的检测范围-MCU with 51 MCU, respectively, 18B20, DS1302, LCD1602 as temperature, time collection and display devices. From the current temperature via serial port, interval of about 14s, can also be issued by the serial temperature of the upper and lower limits, sent to six characters, the first three as the lower limit of the latter three as the maximum temperature range of the detection range 18B20