The document discusses the Arduino, an open-source electronics prototyping platform. It notes that while the Arduino hardware uses inexpensive 8-bit processors, it was the first hardware development kit that was easy enough for people without electronics experience to use, including artists and designers. The Arduino platform is user-friendly, multi-platform, free, and open source. It can control digital and analog pins, communicate over serial ports, and connect to other peripherals. Shields add functionality like Ethernet or GPS connectivity. The Arduino uses a Wiring programming language similar to C++.