spcomm是DELPHI，BCB下的，非常好用的VCL控件，比MSCOM好用些。这个源程序给出了spcomm的基本用法。-spcomm is Delphi, the BCB, very handy VCL controls more than EMS handy. This is a source spcomm the basic usage.

Delphi串口开发控件, 包含DELPHI源代码-Delphi Serial Port VCL Version 2.5 1. Add OnSendDataEmpty event handler when all data in buffer are sent(send-buffer become empty) this handler is called. You may call send data here. 2. Ch