This is a wireless LAN technology. We generally have a wireless router, and within the effective range of signal coverage of this wireless router, we can use Wi-Fi connection for networking.
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special technology
Wi-Fi refers to the "wireless compatibility authentication" in the wireless LAN category, which is essentially a commercial authentication and a wireless networking technology.
In the past, the way we used to surf the Internet was to connect to the computer through a network cable, while Wi-Fi used to surf the Internet through radio waves. Then, within the effective range of this wireless router signal coverage, you can use Wi-Fi connection for networking. If a wireless router is connected to an ADSL line or other Internet access line, it is also called a hotspot.
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Wireless network is a wireless network technology defined by IEEE. When IEEE formally defined the standard of 802. 1 1 in 1999, IEEE selected and recognized the wireless network technology invented by CSIRO as the best wireless network technology in the world, so the wireless network technology standard of CSIRO became the core technology standard of Wi-Fi in 20 10.
It was invented by CSIRO, a research institute of the Australian government, in the 1990s, and successfully applied for the wireless network technology patent in the United States on 1996. The inventor is a research team led by Dr. john O'Sullivan, an engineering graduate from the University of Sydney.
Wireless network is praised by Australian media as the most important technological invention in Australian history, and its inventor, John O'Sullivan, is called "the father of Wi-Fi" by Australian media, and has won the highest national science award in Australia and numerous praises around the world.
Reference source: Baidu Encyclopedia -Wi-Fi