Product, Technology and Patent
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.400 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs). Invented by Dutch electrical engineer Jaap Haartsen, working for telecom vendor Ericsson in 1994, it was originally conceived as a wireless alternative to RS-232 data cables.
Wi-Fi (/ˈwaɪfaɪ/) is technology for radio wireless local area networking of devices based on the IEEE 802.11 standards. Wi‑Fi is a trademark of the Wi-Fi Alliance, which restricts the use of the term Wi-Fi Certified to products that successfully complete interoperability certification testing.
——虽然很难用「革命性」和「改变世界」这样的词语来形容 moto X，但在智能手机的历史上，和它一样不按常理出牌，不玩配置堆砌的设备并不多，无论是对于摩托罗拉这家公司还是整个手机行业来说，它都是一款值得怀念的设备。