Answer Posted / veeranna
Bluetooth is a low power wireless technology. It works in
unlicensed band of 2.4GHz. The minimum specified range for
Bluetooth is 10m.
It uses Frequency hopping technique to avoid interference
and uses time division multiplex for communication.
The device which initiates the connection is called master,
all other devices (max 7) called slves tune to masters
frequency and time to form piconet.
Three are various versions more popular once are Bluetooth
1.2 ,2.0,2.1 and now 3.0.
Over a period of time Bluetooth has evolved as as high speed
low power technology.
Visit following link to know more about 2.1
http://bluetooth21.blogspot.com/
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