文件名称：操作系统 Operating System
文件大小：249KB
文件格式：PDF
更新时间：2014-11-01 08:44:49
计算机 系统 操作系统 课件
操作系统课件 An operating system (OS) is a set of programs that manages computer hardware resources, and provides common services for application software. The operating system is the most important type of system software in a computer system. Without an operating system, a user cannot run an application program on their computer, unless the application program is self booting.