Operating Systems Chapter 5: Input/Output 5,1 Principles of l/o hardwareⅣO硬件原理 5,2 Principles of lo software 10软件原理 4 5.3 10 software layers IO软件层次 H 5.4 Disks 盘 H 5.5 Clocks 时钟 56 Character- oriented terminals面向字符的终端 57 Graphical user interfaces图形用户界面 a 5.8 Network terminals 网络终端 耳59 Power management 电源管理 Gao Haichang, Software School, Xidian University 3Operating Systems Gao Haichang , Software School, Xidian University 3 Chapter 5: Input/Output  5.1 Principles of I/O hardware I/O硬件原理  5.2 Principles of I/O software I/O软件原理  5.3 I/O software layers I/O软件层次  5.4 Disks 盘  5.5 Clocks 时钟  5.6 Character-oriented terminals 面向字符的终端  5.7 Graphical user interfaces 图形用户界面  5.8 Network terminals 网络终端  5.9 Power management 电源管理