说明：  MCS-51单片机C语言的U盘文件读写示例程序，本程序演示字节读写,文件枚举,文件复制, 用于将U盘中的/C51/CH376HFT.C文件中的小写字母转成大写字母后, 写到新建的文件NEWFILE.TXT中。
(MCS-51 microcontroller C language U disk file reading and writing examples of procedures, demonstration of the process of byte read and write, enumerate files, file copy, for U disk /C51/CH376HFT.C file in the lowercase letters to uppercase letters, wrote the new files NEWFILE.TXT.)