说明：  串口数据采集RS232串口是工业中比较常用，也最容易接触到的一种总线协议，台式机上一般都有二个，而现在很多下位机、仪器等很多都还是使用串口通信的。通过RS232串口可以方便的实现Labview与其他测试软件、控制软件的通信。
(Serial port data acquisition RS232 serial port is a kind of bus protocol which is commonly used in industry, and it is also the most easy to contact. In general, there are two desktop computers, and many lower computer, instrument and so on are still used in serial communication. The communication between Labview and other test softwares and control software can be conveniently realized through RS232 serial port.)