Bluetooth
Bluetooth is a wireless communication technology standard for exchanging data over short distances using radio waves in the 2.4 GHz ISM band. It enables devices like smartphones, headphones, keyboards, and IoT sensors to connect and communicate without cables, supporting both data transfer and audio streaming. The technology is managed by the Bluetooth Special Interest Group (SIG) and includes various versions (e.g., Bluetooth Classic, Bluetooth Low Energy) with evolving capabilities.
Developers should learn Bluetooth for building applications that require short-range wireless connectivity, such as IoT devices, wearables, smart home systems, and audio accessories. It's essential when creating cross-device interactions, like connecting a mobile app to a fitness tracker or enabling file transfers between phones, due to its low power consumption, widespread adoption, and standardized protocols. Knowledge of Bluetooth is particularly valuable in embedded systems, mobile development, and consumer electronics projects.