《Operating System Concepts》阅读笔记：p50-p61

《Operating System Concepts》学习第 9 天，p50-p61 总结，总计 12 页。

一、技术总结

1.system call

(1)  定义

The primary interface between processes and the operating system, providing a means to invoke services made available by the operating system.

二、英语总结(生词：4)

1. legion

(1)  legion: *leg-(“to gather, collect”)

c. a large group of people or thing.

示例：The free-software movement is driving legions of programmers to create thousands of open-source projects, including operating systems(《Operating System Concepts》第 51 页)。

关于英语的注解同步更新汇总到 https://github.com/codists/English-In-CS-Books 仓库。

三、其它

chapter 1(introduction)简评： 对操作系统做了一个整体的介绍，包括操作系统概念， I/O管理, 内存管理，操作系统组织结构，虚拟化技术，常见的开源操作系统等。整体来看，风格稍微有点啰嗦，但是能把概念的来龙去脉，定义讲得很清楚，这点我很喜欢。

四、参考资料

1