Can you tell me what Bluetooth is?

The so-called Bluetooth technology is actually a short-range radio technology. The use of "Bluetooth" technology can effectively simplify the communication between mobile communication terminal devices such as handheld computers, notebook computers, and mobile phones. Communication can also successfully simplify the communication between the above devices and the Internet, thereby making the data transmission between these modern communication devices and the Internet faster and more efficient, broadening the path for wireless communication. Bluetooth adopts a decentralized network structure and fast frequency hopping and short packet technology, supports point-to-point and point-to-multipoint communication, and works in the globally common 2.4GHz ISM (ie Industrial, Scientific, Medical) frequency band. Its data rate is 1Mbps. Adopt time division duplex transmission scheme to achieve full-duplex transmission