说明：  温度传感器DS18B20控制程序，显示环境温度,编译优化等级-01,三位数码管显示，读取当前环境温度，精度达0.1度，温度范围0-99度。
(Temperature sensor DS18B20 control procedures, display environment temperature, compile optimization level -01, three digital tube display, read the current ambient temperature, accuracy of 0.1 degrees, temperature range of 0-99 degrees.)