This is a clone board of the original Arduino Nano board that has most of the components of the Arduino Nano and uses the same microcontroller (ATmega328P). This board is Arduino-Compatible, which means that you can use it the same way you use the original Arduino Nano, but with a much cheaper price! Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux). Please note that you will need to download the ft232 driver to be able to program this board using the Arduino IDE.