Bluetooth

Bluetooth is a wireless technology standard that is used for transmitting data over short distances. This standard is widespread and used by a lot of devices like telephones, tablets, headsets, media players, game consoles, etc. The name comes from Harald Bluetooth, a Danish king from the last period of the 10th century.

Advantages

• The technology is wireless
• It's free to use
• It is very easy to use and the connections are made almost automatically
• There is little chance that interferences will occur, even if there are many devices around who use it
• It has low energy consumption and uses a small processing power
• It's supported by many devices

Disadvantages

• The speed is not impressive
• The security isn’t so good as other wireless technologies
• The battery life will drop considerably if Bluetooth is always on
• It has a low range, related to other wireless technologies

Components

• Antenna/RF
• Bluetooth Radio and Baseband
• Bluetooth Software Protocol Stack

 Versions

• Bluetooth v1.0 and v1.0B
• Bluetooth v1.1
• Bluetooth v1.2
• Bluetooth v2.0 + EDR
• Bluetooth v2.1 + EDR
• Bluetooth v3.0 + HS
• Bluetooth v4.0