操作系统上机\\os_4设备管理-operating system on the plane \\ os_4 equipment management

黑莓截取屏幕程序，对当前屏幕进行截图。OS4.2上测试通过-Blackberry interception screen process to capture the current screen. OS4.2 on the tested

用c语言实现模拟unix环境下成组链接法-Unix using c language for analog environment into a set of links France

通过利用磁盘文件，完成实现操作系统的文件管理功能，主要包括目录结构的管理、外存空间的分配与释放以及空闲空间管理三部分，掌握文件管理的相关文件操作的过程。-Through the use of a disk file, complete the operating system s file management functions, including the management of the directory structure, external memory space allocat