The difference between Wi-Fi and Bluetooth

Both Wi-Fi and Bluetooth use radio waves to connect devices, but each technology was created for entirely different tasks.

The wireless era is ushering in a world of unlimited connectivity, where millions of devices can communicate with each other without the need for numerous physical cables. Among these, Wi-Fi and Bluetooth are two of the leading connectivity technologies. Although both use radio waves to transmit data, their operating methods are distinctly different.

Both Wi-Fi and Bluetooth are still operational in today's wireless connectivity world.

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Bluetooth is designed for simple, short-range connections, while Wi-Fi offers wider connectivity and provides a wireless network for multiple devices simultaneously. Wi-Fi allows users to connect to the internet remotely, while Bluetooth extends connectivity within a nearby area. Although Wi-Fi can perform the functions of Bluetooth, its complexity and power consumption make Bluetooth the optimal choice for fast, local connections.

The role of Wi-Fi

Wi-Fi technology originated from numerous inventions in the field of wireless broadcasting from the 19th century. In particular, the contributions of actress and inventor Hedy Lamarr during World War II laid the foundation for today's Wi-Fi frequency hopping capabilities.

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The first Wi-Fi standard, 802.11, was published by the Institute of Electrical and Electronics Engineers (IEEE) in 1997, and a consortium of companies jointly managed the technology. Although many believe "Wi-Fi" stands for "wireless fidelity," this is simply a marketing ploy to make it sound more appealing.

Wi-Fi works by using radio frequencies to transmit data, splitting the signal into multiple parts and distributing them across various frequency bands, allowing for the transmission of large amounts of data at high speeds from multiple devices simultaneously. However, Wi-Fi only supports local connections, while wireless internet allows for wider connectivity through routers. The complexity and energy consumption of Wi-Fi make it an uneconomical choice for close-range connections, where Bluetooth can be advantageous.

Each connection plays a different role, making the unification process far from simple.

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The role of Bluetooth

Invented in 1994 by Dr. Jaap Haartsen (Netherlands), Bluetooth uses 2.4 GHz UHF radio waves to establish a stable connection over short distances. The name "Bluetooth" was derived from an Intel employee, Jim Kardach, inspired by the Viking king Harald Gormsson. Bluetooth has a simple design, consumes little power, and can be integrated into many different devices. It allows for strong connections between nearby devices without the need for a direct transmission line.

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Although Bluetooth isn't as fast as Wi-Fi, with a maximum speed of around 50 Mbps and a range of about 9 meters, it's still an ideal solution for eliminating cables and creating seamless connections between devices like keyboards, headphones, and many other smart devices.

As technology advances, Wi-Fi and Bluetooth continue to quietly operate the wireless world in their own ways, playing a crucial role in connecting devices and providing convenience and efficiency for users.

Source: https://thanhnien.vn/su-khac-nhau-cua-wi-fi-va-bluetooth-185260614091935271.htm