| With more and more Bluetooth in the market and | | | | at the physical level and at the protocol level. It |
| universal using in our lifetime, people pay | | | | connects at the physical level through its |
| moreattention on it. | | | | radio-frequency standard. It networking transmits |
| * What is it? | | | | data via low-power radio waves with a frequency |
| Bluetooth, it is actually a kind of short distant | | | | of 2.45 gigahertz. In the protocol level, |
| wireless communication technology. Through | | | | Bluetooth-enabled devices have to agree on the |
| Bluetooth technology, it simplifies the | | | | types and amount of information sent and |
| communication of mobile communication terminal | | | | received. |
| equipments among the palmtop, laptop and mobile | | | | * Bluetooth Hands free Devices |
| phone, and simplifies the communication between | | | | The most useful application of it is in mobile |
| the terminal equipments and the internet. So it | | | | communication: most of hands free devices on |
| speeds the data transmission between the | | | | the market are based on Bluetooth technology. |
| terminal equipments and the internet, and | | | | Among them are Bluetooth headsets, car kit , |
| broadens the road for wireless communication. It | | | | Bluetooth GPS receiver products and Bluetooth |
| has been specifically designed as a low cost, low | | | | mouse etc.. |
| power, radio technology, which is particularly | | | | * Advantage of Bluetooth |
| suited to the short range Personal Area Network | | | | First of all, it is a standard technology, so many |
| (PAN) application. | | | | products are based on it. Secondly, compared to |
| * How does it work? | | | | other wireless technologies, it consumes much |
| Bluetooth requires that a low-cost transceiver chip | | | | less power. Because of these advantages, it has |
| be included in each device. It is essentially a | | | | been widely used in industries and our daily lives |
| networking standard that connects at two levels: | | | | as well. |