[an error occurred while processing this directive]
Help
Click

MORE PROGRAMMES

Last Updated: Thursday, 26 July 2007, 16:37 GMT 17:37 UK
Click Essentials: Bluetooth
By Marc Cieslak
Reporter, BBC Click

Bluetooth logo (photo: Ericsson)
Keeping our kit connected requires more and more wires, creating a clutter of cables which can often look like a mass of electronic spaghetti. Bluetooth-enabled devices however, communicate with each other without the need for messy wires.

  • Bluetooth first appeared in 1998. It is a low-power consumption, radio-based system which allows devices to communicate with each other wirelessly.
  • One Bluetooth device can communicate with seven other devices.
  • The signal transmitted by Bluetooth is fairly low-powered, which means the effective range of any device is limited to about 10 metres. This space is known as a Personal Area Network.
  • Nowadays, you will find Bluetooth features in a variety of different bits of kit, including mobile phones, PDAs, headsets and printers, to name just a few. All of these devices can communicate with one another.
  • For instance, mobile phones can synch with a computer, backing-up contacts, or sharing photos. A Bluetooth mouse or keyboard reduces the number of wires on a desktop, and Bluetooth-enabled printers can receive data from similarly enabled kit. You can also create an "on the move" Personal Area Network.
  • There are a variety of simple headphones for personal stereos or MP3 players, and headsets with microphones for mobile phones.
  • Global positioning systems make navigating unfamiliar streets a doddle. However, the GPS feature on smart phones can be a big drain on the phone's battery. A Bluetooth GPS dongle does away with the power problem because it relies on its own battery. And of course it can connect to a Smartphone without wires.
  • Be careful when using Bluetooth in battery-powered devices though, leaving it switched on draws additional power from the battery.
  • Bluetooth devices are controlled by what is called profiles. These profiles define the device's features.
  • When buying a new piece of Bluetooth equipment make sure it supports the relevant profiles to ensure compatibility. It is a good idea to check the packaging first.


SEE ALSO
Click Essentials: Desktops
06 Jul 07 |  Click
Click Essentials: Firewalls
20 Apr 07 |  Click

RELATED INTERNET LINKS
The BBC is not responsible for the content of external internet sites


FEATURES, VIEWS, ANALYSIS
Has China's housing bubble burst?
How the world's oldest clove tree defied an empire
Why Royal Ballet principal Sergei Polunin quit


banner watch listen bbc sport Americas Africa Europe Middle East South Asia Asia Pacific