It's Bluetooth again...

The features of Bluetooth are:

• Operates upto 10m range with a speed of 512KBPS (Even 100m range is available)
  
• Uses a frequency spectrum range of 2.4GHz
  
• Frquency-hopping technique is used to avoid signal conflicts


• Uses 79 different frequencies at random
  
• Jumps from one frequency to other 1600 times a second
  

The advantages of Bluetooth technology are:

• Operates on radiowaves and doesn't require 'line of sight' like Infrared
  
• More than two devices can be interfaced at a time unlike Infrared communication
  
• Ability to form a Personal Area Network(PAN) called 'PICONET'
  
• Frequency-hopping (a technique that avoids the conflict of signals) is used since the BT device uses 79 individual frequencies by random selection
  
• Incompatibility problems could be avoided
  
• Highly versatile

Some devices that work on Bluetooth technology are:

1. Mobile hands free


2. Microphones and headphones


3. Dongle*


4. Headset of a telephone

Dongle (the 2nd device in the series of pictures) is a hardware that is connected to those PCs in which in-built Bluetooth adaptors are not available. This device allows various input devices like mouse and keyboard to be interfaced with the computer, putting aside all the wires that are needed to connect them to the PC. Even printers and mobile phones can be interfaced with the PC using this device called dongle. Thus, it avoids complex wires running between the devices and makes the configuration look easy, clean and simple.

I wish Bluetooth could be used for the following devices in the future, for, these are the ones with which I find difficulties when it comes to connections and interfacing:

1.Audio systems(Sub-woofer and speaker systems)
2.Hard disc
3.CD-ROM drive
4.Also, the Monitor.