Bluetooth is a wireless technology developed in 1994 by Ericsson, allowing electronic devices to communicate without cords, using short-range data transmission. Key features include a communication link called piconet, a low power usage, and applications ranging from headsets to printers, though it has disadvantages like slower transfer rates and security concerns. The future of Bluetooth promises faster speeds, improved connection strength, and broader applications.

1. BLUETOOTH
REPLACEMENT OF WIRES

2. WHAT IS BLUETOOTH
Bluetooth is a wireless technology used to
transfer data between different electronic
devices. The distance of data transmission is
small in comparison to other modes of
wireless communication. This technology
eradicates the use of cords, cables, adapters
and permits the electronic devices to
communicate wirelessly among each other.

3. HISTORY OF BLUETOOTH
• BLUETOOTH WAS INVENTED IN 1994 BY ERICSSON.
• THE COMPANY LATER STARTED WORKING WITH A LARGER GROUP OF
COMPANIES CALLED THE BLUETOOTH SPECIAL INTERESTS GROUP, OR "SIG,"
TO DEVELOP THE TECHNOLOGY INTO WHAT IT IS TODAY.
• BLUETOOTH IS NOT OWNED BY ANY ONE COMPANY AND IS DEVELOPED AND
MAINTAINED BY SIG.
• THE NAME BLUETOOTH CAME FROM A CODE NAME ORIGINALLY USED BY SIG
FOR THE PROJECT AND IS A REFERENCE TO A 10TH CENTURY DANISH KING
NAMED HAROLD BLUETOOTH, WHO WAS RESPONSIBLE FOR UNITING
NORWAY, SWEDEN, AND DENMARK.

4. HOW IT WORKS
• IT COMPRISES OF A BASE BAND PROCESSOR, A RADIO AND AN ANTENNA . THE
BASE-BAND PROCESSOR CONVERTS THE DATA INTO SIGNALS, THE ANTENNA OF
ANOTHER BLUE TOOTH DEVICE, WITHIN AT LEAST 30 FEET DISTANCE, RECEIVES A
TRANSMITTED SIGNAL IN THE AIR.
It uses a frequency hopping spread spectrum technique (FHSS)
- which is one of two basic modulation techniques used in
spread spectrum signal transmission. Frequencies are
switched repeatedly during radio transmission to help reduce
unlawful access or other means of telecommunications to
cross paths and cause interruption

5. PICONET
• A PICONET SESSION IS A COMMUNICATION LINK THAT MUST BE
CREATED BETWEEN DEVICES FOR DEVICES TO COMMUNICATE WITH
EACH OTHER.
• THIS IS DONE WHEN THE MAC ADDRESS AND THE PIN NUMBER
MATCH.
• IF TWO DEVICES COME ONTO CONTACT WITH EACH OTHER( 32
FEET) THE USER WILL BE PROMPTED TO INITIATE A
COMMUNICATION SESSION

6. WHAT BLUETOOTH DELIVERS TO THE END-USER
• CONNECTS A WIDE RANGE OF COMPUTING AND
TELECOMMUNICATION DEVICES
• EXPAND COMMUNICATION CAPABILITIES
• DEVICES CAN COMMUNICATE WITH EACH OTHER WITH WIRELESS
CONNECTIVITY

7. Types/uses Of Bluetooth Devices:
1. Head Set
2. In-Car Bluetooth System
3. Bluetooth Equipped Printer
4. Bluetooth Equipped Web Cam
5. Bluetooth GPS System
6. Bluetooth Key Board

8. IMPORTANCE OF BLUETOOTH:
• THESE HAVE REPLACED CABLES FOR TRANSFERRING INFORMATION
FROM ONE ELECTRONIC DEVICE TO ANOTHER ONE.
• THESE HAVE DECREASED STRAIN LIKE CARRYING PHONES WHILE
TALKING, MAKING HANDS FREE TO DO ANOTHER WORK.
• THIS IS CHEAPLY AVAILABLE.
• IT’S MOBILITY IS ALSO VERY IMPORTANT AS IT DOESN’T NEED ANY
POWER OUTLET OR INTERNET CONNECTION OR ANY OTHER ITEMS.

9. Disadvantages Of Bluetooth:
 Data sent between two Bluetooth devices is very slow compared with
Wi-Fi transfer Rate.
 Range Of a Bluetooth Device is 15-30 feet depending upon the Device.
 Security is Biggest Disadvantage as transfer takes place through radio
waves and a hacker can easily hack it.
 Battery usage is also a problem, it will make device out of power before
it would have if Bluetooth was not powered on.

10. FUTURE OF BLUETOOTH
• DIVERSE APPLICATIONS WITH BLUETOOTH.
• FASTER TRANSFER RATE.
• STRONGER CONNECTION.
• LONGER DISTANCE.

11. QUESTIONS ?