串口文件，COM口，支持文件的传送及文字传送，为源代码，学习意义较高-serial document, COM I support the transmission of documents and text transmission to the source code, meaning higher learning

这是pl2303的驱动，关于USB转串口的驱动程序，用处很大。-This is the pl2303 driver, on the USB-serial driver, has proved very useful.