此书讲解了嵌入式系统的开发及测试过程，对嵌入式系统的测试介绍得很详细，很有参考价值。-Many enterprises regard system-level testing as the final piece of the development effort, rather than as a tool that should be integrated throughout the development process. As a consequence, test teams oft

UNIX嵌入式操作系统中的Advanced Programming in the UNIX system programming. IO ports complex. The file name for the io-multiplexing.-Advanced Programming in the UNIX system programming. IO ports complex. The file name for the io-multiplexing.