What is blue tooth?

Well it isn't some strange form of tooth decay as you might initially imagine. Bluetooth is the name of a new technology that is now becoming commercially available. It promises to change significantly the way we use machines.

What is blue tooth?
Bluetooth is an industrial specification for wireless personal area networks (PANs). Bluetooth provides a way to connect and exchange information between devices such as mobile phones, laptops, PCs, printers, digital cameras, and video game consoles over a secure, globally unlicensed short-range radio frequency. The Bluetooth specifications are developed and licensed by the Bluetooth Special Interest Group.





http://en.wikipedia.org/wiki/Bluetooth
Reply:it is wll tecnology
Reply:Bluetooth is a sort of connectivity that allows mobiles to send things to each other free of charge.
Reply:Wrong section.





And you just answered your own question.
Reply:why did you ask the question if you knew the answer?
Reply:This article is about the electronic protocol named after Harald "Bluetooth" Gormson. For the person, see Harald I of Denmark.





Bluetooth is an industrial specification for wireless personal area networks (PANs). Bluetooth provides a way to connect and exchange information between devices such as mobile phones, laptops, PCs, printers, digital cameras, and video game consoles over a secure, globally unlicensed short-range radio frequency. The Bluetooth specifications are developed and licensed by the Bluetooth Special Interest Group.





Bluetooth is a standard and communications protocol primarily designed for low power consumption, with a short range (power-class-dependent: 1 meter, 10 meters, 100 meters)[1] based on low-cost transceiver microchips in each device.





Bluetooth enables these devices to 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, as long as the received transmission is powerful enough.


It has to be noted that in most cases the effective range of class 2 devices is extended if they connect to a class 1 transceiver, compared to pure class 2 network. This is accomplished by higher sensitivity and transmitter power of the Class 1 device. The higher transmitter power of Class 1 device allows higher power to be received by the Class 2 device. Furthermore, higher sensitivity of Class 1 device allows reception of much lower transmitted power of the Class 2 devices. Thus, allowing operation of Class 2 devices at much higher distances. Devices that use a power amplifier on the transmit, have improved receive sensitivity, and highly optimised antennas are available that routinely achieve ranges of 1km[2] within the Bluetooth Class 1 standard.


Version Data Rate





List of applications





More prevalent applications of Bluetooth include:





* Wireless control of and communication between a mobile phone and a hands-free headset or car kit. This was one of the earliest applications to become popular.


* 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 with OBEX.


* Transfer of contact details, calendar appointments, and reminders between devices with OBEX.


* Replacement of traditional wired serial communications in test equipment, GPS receivers, medical equipment, bar code scanners, and traffic control devices.


* For controls where infrared was traditionally used.


* Sending small advertisements from Bluetooth enabled advertising hoardings to other, discoverable, Bluetooth devices.


* Seventh-generation game consoles—Nintendo Wii[3], Sony PlayStation 3—use Bluetooth for their respective wireless controllers.


* Receiving commercial advertisements ("spam") via a kiosk, e.g. at a movie theatre or lobby





[edit] Bluetooth vs. Wi-Fi in networking





Bluetooth and Wi-Fi have slightly different applications in today's offices, homes, and on the move: setting up networks, printing, or transferring presentations and files from PDAs to computers. Both are versions of unlicensed spread spectrum technology.





Bluetooth differs from Wi-Fi in that the latter provides higher throughput and covers greater distances, but requires more expensive hardware and higher power consumption. They use the same frequency range, but employ different multiplexing schemes. While Bluetooth is a cable replacement for a variety of applications, Wi-Fi is a cable replacement only for local area network access. Bluetooth is often thought of as wireless USB, whereas Wi-Fi is wireless Ethernet, both operating at much lower bandwidth than the cable systems they are trying to replace. However, this analogy is not entirely accurate since any Bluetooth device can, in theory, host any other Bluetooth device—something that is not universal to USB devices, therefore it would resemble more a wireless Firewire.
Reply:BlueTooth is a specification for the use of low-power radio communications to wirelessly link phones, computers and other network devices over short distances. The name "Bluetooth" is borrowed from Harald Bluetooth, a king in Denmark more than 1,000 years ago.


Bluetooth technology was designed primarily to support simple wireless networking of personal consumer devices and peripherals, including cell phones, PDAs, and wireless headsets. Wireless signals transmitted with Bluetooth cover short distances, typically up to 30 feet (10 meters). Bluetooth devices generally communicate at less than 1 Mbps.
Reply:It is a wireless technology that can be used to transfer data without wire between blue tooth enabled machines, e.g., Laptop, Mobile.
Reply:Bluetooth enables the devices to communicate with each other when they are in any range.it is a wireless control of and communication between a mobile phone and a hands-free headset
Reply:Bluetooth


A wireless personal area network (WPAN) standard for short-range transmission of digital voice and data. Bluetooth is widely used for hands-free cellphone operation, including wireless headsets and connecting to Bluetooth-enabled automobiles that turn the car's audio system into a speakerphone. It can also be used to transfer data between cellphone and computer. Although Bluetooth refers to the transmission technology, the term has practically become synonymous with cellphone applications.





Specifications





Supporting point-to-point and multipoint applications, Bluetooth provides up to 720 Kbps data transfer within a range of 10 meters and up to 100 meters with a power boost. Unlike infrared technology (IrDA), which requires line of sight between transmitter and receiver, Bluetooth uses omnidirectional radio waves that can transmit through walls and other non-metal barriers.





Governed by the Bluetooth Special Interest Group (www.bluetooth.com), founded in 1998 by Ericsson, IBM, Intel, Nokia and Toshiba, Bluetooth transmits in the unlicensed 2.4GHz band. It uses a frequency hopping spread spectrum technique that changes its signal 1600 times per second. If there is interference from other devices, transmission continues, but speed is downgraded.





King Blatan of Denmark





The name Bluetooth comes from King Harald Blatan (Bluetooth) of Denmark, who in the 10th century, began to Christianize the country. Ericsson, a Scandinavian company, was the first to develop the specification.





http://www.bluetooth.com/bluetooth/








WPAN


(Wireless Personal Area Network) A wireless network that is typically limited to a small cell radius. In an office environment, a WPAN would be used to transfer data between a handheld device and desktop machine or printer. For example, a mobile user could download e-mail or Web data into a dual mode smartphone or PDA and then exchange that data with a machine in the office. In the home, WPANs provide cable-free connections for alarms, appliances and entertainment systems.





http://www.wimedia.org/en/index.asp
Reply:bluetooth is a form of wireless communication.
Reply:a tooth that is blue usally from chewing gum or blue food dye