操作系统利用一个或多个处理器的硬件资源，为系统用户提供一组服务，它还代表用户
来管理辅助存储器和输入/输出(Input/Output，I/O)设备。因此，在开始分析操作系统之前
掌握一些底层的计算机系统硬件知识是很重要的。(An operating system uses one or more processor hardware resources to provide a set of services to a system user, and it also represents a user
To manage auxiliary memory and input / output (Input/Output, I/O) devices. So before you start analyzing the operating system
It is important to master some of the underlying hardware knowledge of computer systems.)