说明：  开发环境用伟福仿真软件。 详细功能：由51系列单片机读写数字温度传感器DS1820采集到的温度，并将温度值以FAT16文件格式存储到SD卡中。
(Development environment using simulation software Wei Fu. Detailed features: reading and writing from 51 series single-chip digital temperature sensor DS1820 collected temperature, and temperature to FAT16 file format to the SD memory card.)