一个操作系统必须和作为它的基础的硬件系统紧密配合。操作系统需要使用一些只有硬件才能提供的功能。为了完整的了解 Linux ，你需要了解底层硬件的基础知识。本章对于现代 PC 的硬件进行了解说。-and as its hardware system based on the close tie. The operating system only need to use some of the hardware in order to provide the function. To complete understanding of Linux, you need to understand the underlying hardware of the knowledge base. This chapter for the modern PC hardware to know.