Final answer:
The UNO board has 14 digital pins.
Step-by-step explanation:
The UNO board is a popular microcontroller board used by beginners and professionals for various electronic projects. It is based on the ATmega328P microcontroller which has a total of 14 digital pins. These pins can be used for input or output and can be programmed to perform various tasks, such as reading sensors or controlling external devices.