Wi-Fi

WI-FI: Wireless Fidelity

In today’s world, Wi-Fi is one of the most popular networks for wireless data communication. Wi-Fi was invented by NCR Corporation/AT&T in the Netherlands in 1991. Radio waves are used for communication and data transmission in Wi-Fi networks. These radio waves operate at Gigahertz (GHz) the frequency for efficient communication in a Wi-Fi network. 

Wi-Fi zones permit to exchange of information between two or more devices simultaneously. Wi-Fi is commonly used in mobile applications and many other electronic products like Laptops, Computers, TV, Smart LED TVs, Music Systems, Smart light bulbs, etc. 

How WI-FI Works 

Wi-Fi is a high-speed wireless internet connection. In Wi-Fi three main components Internet, Wi-Fi router, and receiver antenna are required. To establish a Wi-Fi network zone three components Internet, Wi-Fi router, and receiver antenna must exist. We can convert the area of homes, schools, colleges, hotels, libraries, restaurants, airports, etc. into Wi-Fi zones. 

The Wi-Fi router receives internet signals from the public network, then converts signals into radio waves and these radio waves can be received by different devices like Mobiles, Laptops, Computers, or any other Wi-Fi compatible device. The range of Wi-Fi signals lies between 100-150 feet depending upon indoor/outdoor environment conditions. The strength of Wi-Fi signals can be Excellent, Good, and Poor as per the distance between the router and the device. 

Currently, Wi-Fi is licensed under IEEE 802.11 standard protocols. Four major types of Wi-Fi Technologies are as follows 

Wi-Fi-802.11a

Wi-Fi-802.11b

Wi-Fi-802.11g

Wi-Fi-802.11n

Source of pics: Google