bg:add principle chapter principle.md #21
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keven2116
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May 17, 2018
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| # 微机原理 | |||
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| 在本篇文章中，我们将内容分为微机结构概述，操作系统概述以及计算机硬件概述三个部分对我们研究 linux 0.11 版本所需要的知识进行简要的整理，以便我们更好的理解 0.11 版本内核的具体内容。 | |||
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章节概要改为 ' 在本章节中，我们将分别从微机结构，操作系统以及计算机硬件这三个方面对微机原理进行剖析，为我们后续分析 0.11 版本内核提供基础的知识储备。'
如何？
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| 每台计算机上都需要有一些主存，用来保存正在执行的程序。在一些简单的操作系统中，内存中一次只允许运行一个程序。如果想要运行第二个程序，那么就必须将第一个程序移出内存，再把第二个程序装入内存。在较为复杂的操作系统中虽然可以同时运行多个程序，但也会有一种保护机制的存在来避免他们之间相互干扰（这种形式虽然一般都为硬件形式，但其由操作系统掌控）[1]。上述内容对计算机主存的管理保护进行了一些观点上的阐述，除此之外还有一个很重要的管理方式就是管理进程的地址空间。一般而言，一个进程拥有的最大地址空间小于主存，通过这种方式我们可以保证进程可以有足够的地址空间，并且内存也可以有足够的容量容纳下进程。 | ||
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| ### 文件 |
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add principle chapter principle.md