，18B20 使用的TO92封装，看上去像普通小功率三极管。按

照方向插紧即可下载相应的程序，数码管会显示 XXC，表示当前的温度。高精度模式用户

可以根据 18b20 说明书自行修改。-, 18B20 use TO92 package, looks like an ordinary low-power transistor. In accordance with the direction of insertion tight to download the corresponding program, the digital control will show XXC, said the current temperature. High-precision mode the user can modify the instructions 18b20.