WiFi technology uses radio signals for communication, typically
operating at a frequency of 2.4 gigahertz (GHz ). Electronics that are
"WiFi Certified" are guaranteed to interoperate with each other
regardless of brand, as long as they use the same version of the
technology. Companies designed this standard to cater to lightweight
computing systems, which are typically mobile and designed to consume
minimal power. Hardware developers produce mobile phones, laptops, and
tablet computers that are all compatible with this wireless technology.
Desktop computers can typically connect to such a network through the
installation of a wireless card or dongle .
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