commvc ......\Com.rar ......\MSCOMM.zip ......\mscomm32 ......\mscomm32.ocx ......\........\mscomm32.ocx ......\SerialPort.pdf ......\VS2005中串口通信的实现.pdf ......\关于VS2010串口通信控件.doc ......\基于vc++和mfc的上位机与plc通讯系统.pdf