At a block level a USB to serial adapter consists of a USB serial processor chip, a serial driver chip and if the adapter is isolated there will be optocouplers in front of the USB and / or serial ports. The above design consists of a FT2232 USB serial processor from FTDI, which is a dual serial port processor. This processor is combined with a SP213 high-speed RS232 transciever from Sipex which makes the overall performance of the adapter solid and reliable.
Easy to Use:
Install one of these Parallax programming environments (BASIC Stamp Editor, Propeller Tool, and SX-Key IDE).
Connect the USB to Serial Adapter to your PC with a USB A to Mini B cable
A message from your system tray will say your hardware is installed and ready to use (Windows)
Connect the adapter to your device's DB9 connector
This USB to Serial Adaptor utilizing the high performance PL2303 chip from Prolific which makes it easy to add a serial port to your desktop or laptop, for general office, commercial and industrial use.