The full form of "Arduino Uno" doesn't stand for a specific acronym. However, the name breaks down like this:
- **Arduino**: It is the name of the open-source electronics platform based on easy-to-use hardware and software. The name "Arduino" comes from a bar in Italy, where one of the founders used to meet with friends.
- **Uno**: In Italian, "Uno" means "one." It refers to the fact that this is the first board in the Arduino family. It's one of the most popular and widely used boards for beginners.
So, **Arduino Uno** simply refers to the first (or "Uno") version of the Arduino board.