3.2.1.1  利用C++ Builder线程实现字符发送
........................................\pcapi.bpr
........................................\pcapi.cpp
........................................\pcapi.exe
........................................\pcapi.obj
........................................\pcapi.res
........................................\pcapi.tds
........................................\pc_pc.cpp
........................................\pc_pc.ddp
........................................\pc_pc.dfm
........................................\pc_pc.h
........................................\pc_pc.obj
........................................\pc_pc.~cpp
........................................\pc_pc.~ddp
........................................\pc_pc.~dfm
........................................\pc_pc.~h
........................................\Unit1.cpp
........................................\Unit1.h
........................................\Unit1.obj