振南51单片机版的FAT文件系统，可读取多种存储设备如SD卡、U盘等，方便用51实现丰富多样的功能。-The of Zhennan 51 microcontroller version of the FAT file system can read a variety of storage devices such as SD card, U disk, etc. to achieve a variety of functions, with 51 convenient.