The art of getting connected is becoming more complicated every day. Bluetooth is one method of connecting these devices together that will streamline the process for you. Bluetooth connection has many interesting features apart from being wireless and automatic and they all contribute to making our lives easier.

Before a conversation can begin, two devices that are attempting to talk to each other, have to agree on a number of points. The first point that they must agree on is if it physical, for example, will they talk over wires, or through some form of wireless signal? If wires are used, how many will be required - one, two, six,, 26? Once all of the physical attributes are determined, more questions present themselves.

How much data will be sent at any one time? For example, parallel ports send several bits at once , while serial ports send data 1 bit at a time.

How do they communicate with each other? All of the parties in an electronic conversation need to know whether the message they receive is the same message that was sent and what all of the bits mean. A set of commands and responses have been developed known as a protocol.

Bluetooth employs a fast frequency hopping scheme, using shorter packets than other standards within the ISM band. This scheme enables Bluetooth communication to be more robust and secure.

Spread-spectrum Frequency Hopping

You can connect up to eight devices at the same time using Bluetooth technology. It is very unlikely you would experience interference if all of these devices were within a 10 meter radius. The technology used is called Spread-spectrum Frequency Hopping and means that it would be a very rare occurrence for more than one device to be transmitting on the same frequency at the very same time.

Frequency hopping is basically what happens when moving from one frequency to another within the ISM radio band. When a packet is sent or received by a Bluetooth device, it and the device (or devices) it's communicating with simply hop to another frequency before sending or receiving the next packet.

79 individual, randomly chosen frequencies will be used with this technique and these will change from one to another on a regular basis. What this means is that because the transmitters change frequency 1,600 times every second, more devices can use the limited slice of the radio spectrum.