The full name of WIFI is Wireless Fidelity, but the correct wording should be “Wi-Fi”, but we usually abbreviate it to “Wifi”. This is wireless LAN technology. Wireless routers, wireless mice, wireless keyboards, drones, etc. are common in our lives and are all applied to WIFI connections.
In 1999, when the person in charge of IEEE defined the 801.11 standard, IEEC decided that the wireless network technology invented by CSIRO was the best wireless technology in the world. Therefore, CSIRO became WI-FI2010. Basic technical standards. It was invented by the Australian government research organization CSIRO in the 1990s and successfully applied for a wireless network technology patent in the United States in 1996. The inventor is a group of engineering and technical personnel who graduated from the United States. The University of Sydney is headed by Dr. John O’Sullivan, who is a graduate of the University of Sydney Engineering Department. The wireless network is hailed by the Australian media as the most important technological invention in Australian history. Its inventor, John O’Sullivan,
Let us look at the principle of WIFI technology. Wi-Fi refers to “wireless compatibility authentication” in the category of wireless LAN networks. It is basically a commercial certification and wireless network technology. In the past, we were connected to the computer through a network cable, while Wi-Fi was connected through radio waves. Therefore, if it is a wireless network, you can connect to the effective signal coverage of this wireless router via Wi-Fi. A router connected to an ADSL line or another Internet line is called a hotspot, but the appearance of wifi jammer suddenly makes WiFi become non-existent.
We can also understand WIFI as a wireless broadband: in fact, it can convert wired network signals into wireless signals, and can be used by computers, mobile phones, PDAs, etc. The partner is responsible for its technology. If the mobile phone has a WIFI function, when the WIFI wireless signal is available, the Internet cannot be accessed through the China Mobile Unicom network, thus saving data charges. However, WIFI signals are also provided by wired networks, such as broadband signals in homes or public places, and as long as a wireless router is connected, the wired signals can be converted into WIFI signals.
Compared with 3G Internet, the latest 2G Internet access generally speaking, most wifi is fast, save power, as long as there is no interference from WiFi jammers, there is no flow restriction, wireless devices do not need to insert a SIM card, which means our The phone does not need a SIM card, you can go online. The biggest advantage of WIFI is that you can access the Internet without using data traffic, which can greatly reduce the cost of data traffic. You can use WIFI to play games and watch movies as needed without worrying about traffic.