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Look, Ma. No Wires!

Bluetooth Technology: Look, Ma. No Wires! Electronic devices connect to one another through different devices. Computers, entertainment systems, telephones and pieces and parts that make up electronic devices can communicate to one another by using wires, cables, radio signals, infrared light beams, connectors, plugs and a great variety of protocols.

As technology reinvents itself almost daily, connecting devices become more and more complex everyday.

How It Works

In order for two devices to work with each other, they must either be connected with wires or through wireless signals. The number of connecting wires can be anywhere from one to a thousand, depending on the type of device. Wires are also connected through serial or parallel ports. Serial ports send 1 bit (binary digit) at a time while parallel ports can send several bits at once. For the communication with binary digits to work, a set of commands and responses we call protocols has to be developed.

Bluetooth technology eliminates user interference by using a radio-frequency standard. Different devices agree on when bits are sent and how many are to be sent at a particular time. By keeping the transmission low, Bluetooth also allows longer battery life.

A Bluetooth device can operate up to seven devices at once. This network of devices is called a piconet. The main Bluetooth device can communicate to only one device at a given moment however, it communicates to other devices within the network in a round-robin so that all devices will be covered.

A Bluetooth device trying to connect to other devices can ask for information such as the device name, device class, list of services and technical information.

Once connected, the system of devices works like a network wherein data, protocols and commands are communicated through radio frequency.

Imagine this: Your Bluetooth device is connected to a Bluetooth GPS device, a Bluetooth cellular phone, Bluetooth landline phone and Bluetooth Security system. When you get home, your Bluetooth GPS device can relay information of your whereabouts to your security system at home. Once it receives data that you are on the doorstep, the security system opens your front door. If you left your cellular phone inside and you were expecting a phone call - no problem! Your cellular phone, through a signal from the GPS device can retransmit your call to the landline phone.

With Bluetooth technology, anyone can have a wireless system setup and doesn't have to lift a finger!


About the Author: Steve Campbell is an expert on Discount Home Eletronics. Visit his website for Discount Digital Cameras




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