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.

系统提供的功能包括： 1．通过用户终端控制LED灯的亮灭，以实现IO口的控制。 2．可获得的电阻值。 3．可以通过AD转换获得所需数据。 4．电阻阻值过大蜂鸣报警。 5. 该仪器允许远程终端控制，方便用户的使用和远程控制。 -The system provides features include: a. Bright LED lights controlled by the user terminal to eliminate in order to achieve c