多线程 ( Multi-Thread ) RS232 串行口通讯控件 ( 1.82 版，无源码 Delphi 3.0/4.0/5.0 版适用 )，作者: Varian Software Services NL。 ,Multi-threaded (Multi-Thread) RS232 serial port communications control (1.82 version, non-source version of Delphi 3.0/4.0/5.0 applicable), the