(Wi-Fi is an industrial specification for wireless network communication (IEEE802.11) defined by IEEE. The first version of Wi-Fi was published in 1997, during which the medium access control layer (MAC layer) and the physical layer were defined. The physical layer defines two wireless FM methods and one infrared transmission method for offices in the 2.4GHz ISM band)
发表于 2022-8-10 11:00:33
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