将USB转换成串口232的资料 将USB转换成串口232的资料-USB serial converted into 232 information will be converted into a USB serial data 232

几个USB转串口RS—232c的原理图，配转换芯片的datasheet。-Some USB to Serial RS-232c of the schematic diagram, with the conversion chip datasheet.

usb与RS232之间的通信，包括主机程序，固件源程序。采用HID类！我现在需要USB键盘方面的源程序-Usb and RS232 communication between host program, including the firmware of the source program. The HID class!!!!! Now I need a USB keyboard aspects of the source progr

USB TO RS232 Cable for Windows