CH341是一个USB总线的转接芯片，通过USB总线提供串口、打印口或者并口。 在串口方式下，CH341提供串口发送使能、串口接收就绪等交互式的速率控制信号以 及常用的MODEM联络信号，用于将普通的串口设备直接升级到USB总线。 -CH341 is a USB bus adapter chips, provided through the USB serial bus, printer port or parallel port. In serial mode, CH341 Send

附件为c++下的操作USB驱动的开发，很好讲述了上位机软件与下位机软件通过USB交互的程序代码。-Accessories for operating under the USB c++ driven development, very good about the PC software and lower computer software via USB interactive program code.

Mobile radio communications are evolving from pure telephony systems to multimedia platforms offering a variety of services ranging from simple file transfers and audio and video streaming, to interactive applications and positioning tasks. Naturally