This is a beta course, so its structure, chapters, and examples may continue to change.I/O控制方式 This article is being translated. Please check back soon. PreviousI/O系统练习题I/O系统相关练习题和参考答案NextI/O子系统结构I/O子系统的层次结构、各层功能、接口设计和系统实现
