Functions of different versions of wifi

Functions of different versions of wifi:

First, technological development has introduced more technical features, some of which are mandatory and some are optional, so that people with different abilities can produce products according to their own abilities.

Second, the new equipment has more technical features, but it must be compatible with the old equipment, so it needs to be compatible with the old equipment forward.

Thirdly, some new features introduced in technical iteration are not very useful in the later productization process, so some technical features will be abandoned.

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related data

The word Wi-Fi is often mistaken for WirelessFidelity, and even the Wi-Fi alliance itself often uses the word "WirelessFidelity" in press releases and documents. Wi-Fi also appeared in a paper by ITAA. But in fact, the word Wi-Fi doesn't mean anything, and it's incomplete.

Wireless network refers to the "wireless compatibility certification" in the field of wireless local area network, which is essentially a commercial certification and a wireless networking technology. In the past, computers were connected by network cables, while Wi-Fi was connected by radio waves. Common is a wireless router. Then you can use Wi-Fi connection for networking within the effective range of radio wave coverage of this wireless router.

If a wireless router is connected to an ADSL line or other Internet access line, it is also called a hotspot. Wireless Internet access can be simply understood as wireless Internet access. Almost all smartphones, tablets and laptops support Wi-Fi access, which is the most widely used wireless network transmission technology today.

In fact, it is to convert wired network signals into wireless signals, as introduced at the beginning. Use wireless router to receive through related computers, mobile phones, tablets, etc. The technology that supports it. If the mobile phone has Wi-Fi function, it can surf the Internet without using the mobile Unicom network when there is Wi-Fi wireless signal, thus saving the traffic fee.