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对于iOS调标签类别，精选ios编程学习，很好的参考资料。(For the iOS label category, select the IOS programming learning, a good reference.)

System Info for Delphi 7

现代操作系统第三版中文，带目录，觉得好请点赞(Modern operating system third edition Chinese, with directory, feel good, please comment)

现代操作系统第四版全英文，觉得好，请点赞(Modern operating system fourth edition English)

这个程序是模拟采用二级目录结构的磁盘文件系统中的文件操作，它可以实现对文件的一些基本管理，如：读、写、删除文件等。通过这个程序可掌握文件子系统的原理，加深对二级目录结构的文件系统中用户管理、文件管理、目录管理的理解，并用程序实现对文件子系统的模拟。(the procedure is simulated using two disk directory structure of the file system file manipulation, it can be achieved on some basic document management, such as : read, write, delete files. Through this procedure can grasp the principle document subsystems to enhance the structure of the two file system user management, document management, directory management, understanding, and the procedures to achieve the right documents subsystem simulation.)

计算机操作系统时间片轮度算法的C语言程序(Computer operating system time slice round degree algorithm C language program)

操作系统Operating.System.Concepts.8ed(Operating System Concepts 8ed)

说明：  dos源码，国产的，不是ms-dos，可以学习，非常好用(dos code,made in china ,not ms-dos)

说明：  OZMTOOL to extract DSDT from old BIOS

说明：  ThreadX OS for Arm source