Bluetooth Application Developer's Guide

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As human beings, we accept without question that we have the ability to communicate, that if we speak or write according to a pre-defined set of linguistic rules that we will succeed in conveying information to one another.The tools of human communication, producing sounds that are perceived as speech or creating words on a page, once learnt are used without thought.The limitation on these physical processes that we take for granted is the actual translation of thoughts into effective and meaningful statements.When it comes to electronic communication, however, there is very little that can be assumed or taken for granted. Communication between electronic devices can only be achieved when they also abide by a set of predetermined rules and standards—the Open Systems Interconnect (OSI) model for communications systems protocol stacks being the primary example, and the basis from which many others have evolved.

These standards need to be applied to every aspect of the communication process, from the manipulation of data at the highest level to the utilization of physical transmission media at the lowest. Electronic communication has evolved significantly over the last decade from the earliest packet switched data networks (PSDNs) and the Xerox, Ethernet, and IBM Token Ring local area network (LAN) technologies, to the now common-place mobile telephony and dedicated high-speed data communication. (How would we survive without e-mail and the WWW?)

New technologies are now emerging that allow wireless communication.The IEEE 802.11b or Wi-Fi standard is becoming accepted as the choice for the networking community as it supports features that enable it to perform handovers between access points, and it can effectively become a transparent wireless network, expanding the static wired network. IEEE 802.11b has a data throughput of up to 11 Mbps, which gives it viability against wired networks.This is evolving further with the advent of IEEE 802.11a and its competitor HyperLAN2 with even greater data rates.This technology is expensive and therefore not compatible with price-conscious consumer products, but we have now been provided with the means to create wireless, low-power, cost-effective, unconscious and ad-hoc connectivity between our devices. Its name: Bluetooth. If we believe all of the hype surrounding Bluetooth technology, we can expect our fridge to use our mobile phone to order groceries over the Internet, and, of course, end up ordering an extremely expensive new car instead of a steak! Yes, we have all seen the jokes, but in reality we can utilize this technology now to develop products that will allow us to throw away all the wires—and communicate without cables. Download free Bluetooth Application Developer's Guide.pdf here

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