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Wireless
Wireless computing is just what the name implies -- computing without wires and phone lines using a variety of devices such as laptop and notebook computers, tablets, personal digital assistants (PDAs), e-mail-only devices, handheld computers, and "wearable" technology.
Wireless technology's major benefit to users is the immediate access it offers to computing resources -- your office, other businesses, the Internet -- providing users with a higher degree of flexibility in work and entertainment choices. As a method of data transport, wireless technology is quite like wired technologies in that it comprises hardware devices, a method of transmission, and connections that transform data from the human-input type to a machine-transferable format, then back again. Each piece of this triptych is an important component of wireless technology, with its own topics of focus:
 | Hardware devices. One focus of both hardware devices and methods of transmission is of software development. The parameters of wireless software can seem limiting because the software for devices often has to adhere to a limited-resource silhouette (memory, battery, storage, and so on). |
| Transmission methods. Although most software development efforts these days rely on a rigorously distributed framework, the ability to design software that can be distributed and used over sometimes tenuous connections is even more important. Often the "hard" backbones of transmission are somewhat fixed (for instance, you can only put so many cellular towers in a living space), so transmission and application software design must make up for the gaps. |
| Connections. Data translation, while important in any technological endeavor, is even more critical in a wireless environment because the range of access devices proliferates at an astounding pace. Even with standards in place, some data-format drift occurs (often to squeeze that last bit of optimization out of a limited-resource device); more manufacturers, more devices, means more drift. |
Home networking is currently dominated by 802.11b and HomeRF, with HomeRF running a distant second. These are soon to be joined by 802.11a, HiperLAN/2, and 5-UP. These standards are largely used for Internet and LAN functions that could be accomplished in much the same fashion as wired networks.
New Tech OR Computer Operating Systems
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The Wireless from AT&T Advantage—Wireless from AT&T offers its
customers a number of unique and tangible benefits, including:
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• The ability to call any of the company's 61
million customers for free on select plans.
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• An unprecedented selection of handsets and devices
to meet every need.
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• The ability to make calls on the country's largest
digital voice and data network – the Wireless from AT&T ALLOVERSM
network, which covers more than 270 million people in the top 100 U.S.
markets.
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• The largest international coverage of any US
carrier, giving customers the ability to make calls using an
internationally enabled phone on 6 continents and 170 countries, with
wireless data roaming in 70 countries for laptops, PDAs, and other data
services.
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• A 30-day, no-questions-asked return policy
nationwide—more than any other national carrier.
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• Friendly, high-quality service
at every Wireless from AT&T location.
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• A simplified yet comprehensive service summary
that spells out exactly what customers are buying and estimated future
bills.
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• Interactive mapping tools in
our stores that let customers get more coverage information than ever
before so they can make a more informed decision.
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• And RolloverSM, the wireless plan that
lets customers keep their unused monthly minutes. Refurbished Phones from AT&T!
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