Delphi 本身没有串口控件，这个是一款不错的串口控件。-Delphi does not have serial port control, this is a good serial port control.

SPCOMM3.0,支持多线程,支持DELPHI2009-SPCOMM3.0, supports multi-threading, support DELPHI2009

SPCOMM3.0, 是Delphi操作COM的首选，可支持读写多线程，修改为可支持识别COM10以上的端口。-SPCOMM3.0, Delphi operation COM is the first choice to support reading and writing multi-threaded, modified to support more than identify the port COM10.