USB to I/O Port Controllers PL-2303 驱动程序下载地址：
http://www.prolific.com.tw/eng/downloads.asp?ID=31
目前最新版的驱动PL2303_Prolific_DriverInstaller_v130.zip，支持win7 32位/64位，发布日期为2010/7/15，版本v1.3.0，文件大小为2315 KB。具体下载地址如下：
http://www.prolific.com.tw/support/files/%5CIO%20Cable%5CPL-2303%5CDrivers%20-%20Generic%5CWindows%5Callinone%5CPL2303_Prolific_DriverInstaller_v130.zip
2、驱动安装成功后会提示驱动安装完成并对应一个COM通信端口，我这里安装完成后提示是对应 COM7，因Win7下没有超级终端，可使用 putty 来代替，串口串行口：COM7（就是上面驱动安装完成提示的），连接时选择Serial ，传输速率填写 115200，然后就可以连接成功，如图所示
如有乱码则设置putty语言为utf-8，如图所示
3、除了 Putty，还可以使用 realterm 来代替，Realterm is a terminal program specially designed for capturing, controlling and debugging binary and other difficult data streams. It is far better for debugging comms than Hyperterminal. It has no support for dialing modems, BBS etc - that is what hyperterminal does.下载地址：
http://sourceforge.net/projects/realterm/files/
http://www.liuzhigong.com/download/Realterm_2.0.0.57_setup.rar