Bluetooth - Wireless technology

Bluetooth is a common word in the technology world. Very often we heard about Bluetooth in our phone and computer. If you have a mobile phone or computer then you may use it. But very few people might think much about it rather only using it. Today i will discuss about this very useful and important invention of modern technology. 

 Bluetooth was first invented in 1994 by the telecom vendor Ericson.

It is one of most popular and useful device that help to exchange information between other wireless device includes personal digital assistance( PDA's), mobile phone, laptop and computer. It is a wireless technology for exchanging any kind of document from device to device within a short distance by using short wave-length radio waves in the ISM band. 

In this age of modern technology, mobile, laptop, tab and also many devices are available in the hands of most people. To send data from one mobile to another mobile, one laptop to another laptop Bluetooth is very useful as to do this no need to include any kind of external devices such as pen drive. Now Bluetooth system has been included in many devices like Bluetooth air phone, Bluetooth mouse, headset, keyboard, speakers etc.

  

How Bluetooth work

Bluetooth works in the range of 2400-2483.5 MHz including the guard bands. Bluetooth uses the frequency hopping spread spectrum, which is known as radio technology.
If anybody wants to get any data from one’s mobile, he would be able to get it simply by using Bluetooth device. At first, he should switch on the Bluetooth system. Then he/she have to search using Bluetooth. After finding the desired device he/she will be able to take the data by pairing with the found device. It is totally free from any cost. But it has a limitation. It works within a short distance. It works within 2.4 to 2.485 GHz and physical range up to 50 meters. Now people using this system spontaneously. Its popularity is increasing day by day because of its usefulness. It has been decreased man’s hard work of bearing box of document from moving from one place to another place, one computer to another computer.