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Bluetooth is an industrial specification for wireless personal area networks (PANs), also known as IEEE 802.15.1. more...
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Bluetooth provides a way to connect and exchange information between devices such as personal digital assistants (PDAs), mobile phones, laptops, PCs, printers, digital cameras and video game consoles via a secure, globally unlicensed short-range radio frequency.
Etymology
The name Bluetooth is derived from the cognomen of a 10th century king of Denmark, Harald Bluetooth. According to the inventors of the Bluetooth technology, Harald engaged in diplomacy which led warring parties to negotiate with each other, making Bluetooth a fitting name for their technology, which allows different devices to talk to each other.
Introduction
Bluetooth is a radio standard and communications protocol primarily designed for low power consumption, with a short range (power class dependent: 1 metre, 10 metres, 100 metres) based around low-cost transceiver microchips in each device.
Bluetooth lets these devices communicate with each other when they are in range. The devices use a radio communications system, so they do not have to be in line of sight of each other, and can even be in other rooms, so long as the received transmission is powerful enough.
Bluetooth applications
Wireless control of and communication between a cell phone and a hands free headset or car kit. This is the most popular use.;
Wireless networking between PCs in a confined space and where little bandwidth is required.;
Wireless communications with PC input and output devices, the most common being the mouse, keyboard and printer.;
Transfer of files between devices via OBEX.;
Transfer of contact details, calendar appointments, and reminders between devices via OBEX.;
Replacement of traditional wired serial communications in test equipment, GPS receivers and medical equipment.;
For remote controls where infrared was traditionally used.;
Sending small advertisements from Bluetooth enabled advertising hoardings to other, discoverable, Bluetooth devices.;
Wireless control of a games console, Nintendo's Wii and Sony's PlayStation 3 will both use Bluetooth technology for their wireless controllers.;
Sending commands and software to the LEGO Mindstorms NXT instead of infrared.;
Bluetooth vs. Wi-Fi in networking
Bluetooth and Wi-Fi both have their places in today’s offices, homes and on the move: setting up networks, printing, or transferring presentations and files from PDAs to computers.
Read more at Wikipedia.org
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