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2. • What is Bluetooth?
• History of Bluetooth
• Technology Review of Bluetooth
• Classes of Bluetooth
• Piconet in Bluetooth
• Scatternet in Bluetooth
• Advantages of Bluetooth
• Disadvantages of Bluetooth
• Future of Bluetooth

3. Bluetooth is a method for Data Communication that
uses short-range radio links to replace cables between
Computers and their connected units.

4. • The word “Bluetooth” is taken from the 10th century Danish
King “Harald Bluetooth”. He had been influential in uniting
Scandinavian tribes into a single Kingdom. Bluetooth was
named so because:
1. Bluetooth Technology was developed in Scandinavia
2. Bluetooth Technology is able to unite differing industries
such as Cell Phone, Computing and Automotive Markets

5. • Bluetooth uses a Radio Technology called Frequency
Hopping Spread Spectrum
• Supports Data rate of 1Mb/s(0rignally)
• The Bluetooth specifications are developed and licensed by
the Bluetooth special interest Group(SIG)

6. • Bluetooth devices are classified according to three different
power classes, as shown in the following table:
CLASS MAXIMUM PERMITTED POWER (mW) RANGE (APPROXIMATE)
Class 1 100 mW -100m
Class 2 2.5mW -10m
Class 3 1mW -1m

7. • “Two or more Bluetooth units sharing the same channel”
• One device acts as a master and the device connected to it
act as slaves
• Slaves cannot directly send data to each other
• In effect, the master acts as a switch for the Piconet and all
Traffic must pass through the master
• There can be up to 7 active slaves in a Piconet but only one
master

8. • “A set of two or more interconnected Piconet form
Scatternet”
• A Bluetooth unit can be a slave in two or more Piconet, but it
can be a master in only one
• Device that participate in two or more Piconet may act as
“Gateways”

9. • Eliminates Wires
• Facilitates Data and Voice Communication
• Offers formation of Ad Hoc Networks
• Free of Charge
• Easy to use
• Low Power Consumes Battery Less

10. • Relatively short range
• Less Secure
• Interference with other devices
• Bluetooth internet connection gets slow sometimes

11. • Bluetooth has a good future ahead because it meets a basic
need of connectivity
• New versions of Bluetooth technology will meet high speed
and large range
• Latest version of Bluetooth are improving both its security
and capabilities