what is bluetooth ?
@mauryaashish06 (231)
India
3 responses
@ezzrssi (11188)
• Italy
13 Feb 07
Bluetooth is a telecommunications industry specification that describes how mobile phones, computers, and personal digital assistants (PDAs) can be easily interconnected using a short-range wireless connection. Using this technology, users of cellular phones, pagers, and personal digital assistants can buy a three-in-one phone that can double as a portable phone at home or in the office, get quickly synchronized with information in a desktop or notebook computer, initiate the sending or receiving of a fax, initiate a print-out, and, in general, have all mobile and fixed computer devices be totally coordinated.
Bluetooth requires that a low-cost transceiver chip be included in each device. The tranceiver transmits and receives in a previously unused frequency band of 2.45 GHz that is available globally (with some variation of bandwidth in different countries). In addition to data, up to three voice channels are available. Each device has a unique 48-bit address from the IEEE 802 standard. Connections can be point-to-point or multipoint. The maximum range is 10 meters. Data can be exchanged at a rate of 1 megabit per second (up to 2 Mbps in the second generation of the technology). A frequency hop scheme allows devices to communicate even in areas with a great deal of electromagnetic interference. Built-in encryption and verification is provided.
The technology got its unusual name in honor of Harald Bluetooth, king of Denmark in the mid-tenth century.
@marku23 (75)
• Philippines
13 Feb 07
bluetooth is a feature/protocol of most electronic devices (phones, laptops, PDAs) wherein they can communicate wirelessly, to transfer data, etc. most of the time in short ranges only.
e.g. most cellphones nowadays have bluetooth and they can transfer pics to each other at realtime without the use of cables. They jusy have to activate both their bluetooth features and they can "see and communicate" with each other
