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Notebooks, redes e internet

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Conectividade é a capacidade de se ligar os notebooks a redes; essas redes podem ser locais (LANs, geralmente em locais de trabalho) ou a internet.
Com o crescimento da internet, a conectividade tornou-se atributo indispensável dos notebooks.

Wi-fi

A rede wi-fi permite conexões em alta velocidade a LANs e à internet.
O nome wi-fi é abreviação de wireless fidelity (fidelidade sem fio); dispositivos wi-fi são aqueles que se conformam aos padrões da especificação IEEE 802.11b. O padrão wi-fi começou a ser implementado em 1998, e passou por sucessivas e rápidas evoluções; atualmente (2007), o padrão permite acesso a redes Ethernet com taxa de até 11 mbps.
Atualmente, praticamente todos os notebooks saem de fábrica com chips wi-fi incorporados. As máquinas mais antigas, que não têm o chip, podem utilizar uma placa PCMCIA para acesso wi-fi.

Bluetooth

First developed in 1994, Bluetooth is a low-power, short-range (30 feet) networking specification with moderately fast transmission speeds of 800 kilobits per second. Bluetooth provides a wireless, point-to-point, "personal area network" for PDAs, notebooks, printers, mobile phones, audio components, and other devices. The wireless technology can be used anywhere you have two or more devices that are Bluetooth enabled. For example, you could send files from a notebook to a printer without having to physically connect the two devices with a cable. A few notebooks, such as the IBM ThinkPad T30, now include built-in Bluetooth connectivity. And $129 will buy you a Bluetooth card for expansion-slot Palm PDAs, allowing you to connect to printers, notebooks, mobile phones, and other devices without cables. Despite the promises of Bluetooth, however, hardware makers have been slow to incorporate it into their products. Some experts believe it could be eight years before Bluetooth is commonly used. They attribute the technology's lagging adoption rate to poor usability and confusion about what Bluetooth is and does. For more on that topic, read "Why We're Still Waiting for Bluetooth."

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