Bluetooth

Bluetooth
Bluetooth is the industry specification for personal area networks (personal area networks, or PAN) without cable. Bluetooth connects and can be used to perform the exchange of information between devices. Spesifiksi of Bluetooth devices was developed and distributed by the Bluetooth Special Interest Group. Bluetooth operates in the 2.4GHz frequency band using a frequency hopping traceiver capable of providing voice and data communication services in real time between bluetooth host-host with distance terbatas.Kelemahan this technology is a short range and low data transfer capability.
Originally the name and symbol bluetooth
The name "Bluetooth" is derived from the name of the king at the end of ten centuries, Harald Blatand that in England also called Harald Bluetooth because it's probably a dark-colored teeth. He is the king of Denmark who has managed to unite the tribes that previously fought, including the tribes of the area now called Norway and Sweden. Even the Scania region in Sweden, where bluetooth technology is found also included territories. The ability of the king as a unifier is also similar to bluetooth technology now that can connect various devices such as personal computers and mobile phones. [1]
While the Bluetooth logo comes from the unification of two German letters are analogous with the letter H and B (short for Harald Bluetooth), namely H-rune.gif (Hagall) and Runic letter berkanan.png (Blatand) which later merged.
History
Beginning as a technology of Bluetooth is a wireless communication (without cable) that operate in the 2.4 GHz unlicensed frequency band ISM (Industrial, Scientific and Medical) using a frequency hopping transceiver capable of providing voice and data communication services in real-time between bluetooth host-host with limited service reach distance (around 10 meters). A card that uses Bluetooth radio frequency standard IEEE 802.11 with a limited range of services and the ability to transfer data is lower than cards for the Wireless Local Area Network (WLAN).
Bluetooth formation promoted by 5 large companies Ericsson, IBM, Intel, Nokia and Toshiba to form a Special Interest Group (SIG), which launched this project. In July 1999 document bluetooth specification version 1.0 was launched. In December 1999 started again making bluetooth specification document version 2.0 with the addition of four new promoters of 3Com, Lucent Technologies, Microsoft and Motorola. Currently, more than 1800 companies in various fields to join a consortium as bluetooth technology adopter. Although the standard Bluetooth SIG is currently 'owned' by the promoter group but he is expected to become an IEEE standard (802.15)