What are Hifi and Wifi respectively?

(1) Hi-Fi = hi-fi, hi-fi system in the mouth of enthusiasts generally refers to audio equipment with high technical indicators. Hi-fi is endless. 2 wifi explanation:

WiFi is widely used in handheld devices, and smart phones are one of them. Different from Bluetooth technology used in mobile phones earlier, WiFi has a wider coverage and higher transmission rate, so WiFi mobile phones have become a fashion trend in the current mobile communication industry.

As the frequency band of WiFi is global free and does not need any telecom operation license, WLAN wireless devices provide a wireless air interface that can be used worldwide with extremely low cost and extremely high data bandwidth. Users can browse the web quickly in the WiFi coverage area, and answer and make calls anytime and anywhere. And other broadband data applications based on WLAN, such as streaming media and online games, are worthy of users' expectation. With the function of WIFI, we can make long-distance calls (including international calls), browse the web, send and receive emails, download music and transmit digital photos. Don't worry about slow speed and high cost.

The full name of WiFi is wireless fidelity, also known as 802. 1 1b standard. Its biggest advantage is its fast transmission speed, which can reach 1 1Mbps. In addition, it has a long effective distance and is compatible with various existing 802. 1 1DSSS devices. With the recognition of Centrino, a laptop chipset proposed by Intel, this technology has gradually become a topic of concern. However, since the end of 2005, many mobile phone manufacturers, especially brands that mainly produce smart phones, began to introduce WiFi into their products.

Nowadays, many mobile phones have their own WiFi function, but the Ministry of Information Industry expressly stipulates that mobile phones with WiFi function are not allowed to be listed in China, so none of the mobile phones listed in China have WiFi function. Many of the same models can't use this function in China, but they can be used abroad. Traditional versions of mobile phones, such as dopod 586W and 577W, can use WiFi in China.

Now the range of WiFi flip is more and more extensive in China, and high-end hotels, luxury residential areas, airports and cafes all have WiFi interfaces. When we travel and work, we can surf the Internet in these places with our handheld devices.