The technology in bluetooth

How blue Bluetooth works.


What's that bluetooth?

Bluetooth is an open wireless technology standard for short-distance transmission of data from fixed and mobile electronic devices. Bluetooth was introduced as a wireless replacement for RS-232 cables in 1994.


Bluetooth connects with a number of electronic devices and establishes personal networks that run within the 2,4 GHz band that is not approved. The range of operations is based on the device clause

Bluetooth technology is everywhere— including our heads, our vehicles, our houses, our laptops. So how is it going to work?


Bluetooth transmits information between electronic devices over short distances using radio waves instead of wires or cables. Unlike your cell phone, which uses radio waves to connect several miles away with a cell tower, Bluetooth radio waves devices are 1000 times weaker.
Only travel small distances, usually 10 feet or less, between the two communicating devices. If you have your computer's wireless Bluetooth keyboard and you take the keyboard to a friend's house but leave the computer at home, your keyboard will not be able to communicate with the computer at such a distance. And if you type it, there's nothing on your home computer screen

If Bluetooth-enabled devices are close enough, they can connect inside to each other via a small computer chip that emits the Bluetooth special radio waves. But first, this chip has to be switched on, which can typically be accomplished by pressing a particular button or by flipping a specified switch. Then the two Bluetooth devices communicate over a short-range network.
If you have linked your computer to a Bluetooth-enabled keyboard, display, mouse and speaker, all these devices can form a Bluetooth piconet of their own. But they're not going to talk to each other separately. Another unit— the computer in this situation— will be the main device connected to by all the others.

Piconets are automatically set up. So once you've installed a device like your keyboard, it will automatically connect to the piconet. But if it's not within range, the keyboard will exit the piconet automatically. It will immediately attach when you put the keyboard back home, where it's in range again.


It's not difficult to see why in recent years Bluetooth technology has become so popular. Today, in the original Star Trek television series, everyone can feel like Lieutenant Uhura as they press their finger to their ears and trigger their Bluetooth earpiece to answer an incoming phone call, leaving their hands free to help save the starship Enterprise — or drive a car.

How to pair it with a Phone


1. Make sure that your Bluetooth headset is fully charged, turned on and compatible with your desired smartphone.

2. Switch on your phone. Look for the Bluetooth feature, which is usually found in Settings.

3. Select On (the phone sends out a signal when you turn on the Bluetooth feature and starts searching for other Bluetooth-enabled devices like your headset)

4. The headset will appear on the system list when the phone detects the headset. Sometimes by entering a PIN number, you will be asked to pair the devices. If so, the headset should include the PIN number. The pin number is normally 0000.

5. Once the systems are connected, all your phone calls will automatically connect to your headset as long as it is switched on, and the pairing process will not have to be repeated.

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