操作系统复习笔记
Chap 1 Introduction 什么是操作系统 (What is an operating system) 自顶向下视角：扩展机器 (Extended machine) - 隐藏硬件杂乱的细节，为用户提供易用的虚拟机 (Virtual machine) 自底向上视角：资源管理者 (Resource manager) - 在时间和空间上实现资源的复用 (Multiplexing) 操作系统历史 (History of operating systems) 第一代 (1945-1955)：真空管与插接板 (Vacuum tubes, plug boards)，纯手工操作 (Handwork) 第二代 (1955-1965)：晶体管 (Transistors) 与批处理系统 (Batch systems) 第三代 (1965-1980)：集成电路 (ICs)，多道程序设计 (Multiprogramming)，分时系统 (Time-sharing system) 第四代 (1980-至今)：个人计算机 (Personal computers)，网络操作系统与图形用户界面...
Hello World
Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer in troubleshooting or you can ask me on GitHub. Quick StartCreate a new post1$ hexo new "My New Post" More info: Writing Run server1$ hexo server More info: Server Generate static files1$ hexo generate More info: Generating Deploy to remote sites1$ hexo deploy More info: Deployment