Saturday, May 21, 2011
Friday, May 20, 2011
wireless mouse
bluetooth alert
• Appears as Headset and Hands-Free device on your mobile
• Never miss a call
• never forget your mobile ever again
• universally conpatible with all bluetooth devices
• 100 hour stand-by time
• Resizable neoprene band fits wrists from 7.5″ to 9.5″ around
• 2.4GHz Frequency
• 3 hour charge time
bluetooth headset
Bluetooth Headset
Looking for Bluetooth headset? Auroracell.com carries large selection of Bluetooth device like platonics, jawbone, Motorola, lg, Samsung, blueant, jabra and more. You can find the latest Bluetooth stereo headset and all the new hands free wireless device headset and all the newest Bluetooth technology. All the wireless headset and all the cell phone accessories come with free shipping at the biggest and the cheapest online gsm store. Bluetooth headsets have become must-have for cell phone accessories fanatics particularly in the wake of state and local laws that require the use of a wireless headset while driving. cell phone Bluetooth device usage is not limited to just headsets--you can also use Bluetooth to stream music wirelessly, connect to the Web, transfer files, and more. Bluetooth really is quite simple, inexpensive, and easy to use. In Bluetooth technology, a Bluetooth Headset and a phone communicate with each other over low-frequency radio waves in the 2.4GHz range. No cables or wires are needed, and the only requirement is that both devices be Bluetooth compatible. Bluetooth doesn't cost anything beyond the initial investment in the devices (Bluetooth headsets range from $20-$100). In addition to connecting a cell phone to a headset, Bluetooth is used to connect PCs to keyboards and mice, handhelds to other handhelds, and cell phones to computers. Also on the market is the option for Bluetooth stereo headset for listening to music with a wireless device. Many cars are even equipped with Bluetooth so that you can use the car's audio system for hands-free cell phone functions The process of connecting devices via Bluetooth starts with pairing, a procedure wherein a Bluetooth-enabled phone and another Bluetooth device search for and recognize each other. Once your connection is made and secured via a PIN (personal identification number), the two devices will "talk" to each other and exchange information Its range is limited to 30 feet, which makes it good for connecting a handful of devices but not appropriate for an entire network of computers.
Tuesday, May 17, 2011
bluetooth technology
Bluetooth wireless technology is a cable replacement technology that provides wireless communication between portable devices, desktop devices and peripherals. It is used to swap data and synchronize files between devices without having to connect each other with cable. The wireless link has a range of 10m which offers the user mobility. This technology can be used to make wireless data connection to conventional local area networks (LAN) through an access point. There is no need for the user to open an application or press button to initiate a process. Bluetooth wireless technology is always on and runs in the background. Bluetooth devices scan for other Bluetooth devices and when these devices are in range they start to exchange messages so they can become aware of each others capabilities. These devices do not require a line of sight to transmit data with each other.
Within a few years about 80 percent of the mobile phones are expected to carry the Bluetooth chip. The Bluetooth transceiver operates in the globally available unlicensed ISM radio band of 2.4GHz. The ISM bands include frequency range at 902MHz to 928MHz and 2.4GHz to 2.484GHZ which do not require operator license from a regulatory agency. This means that Bluetooth technology can be used virtually anywhere in the world. Another type of wireless technology that is being used nowadays is infrared signals. The choice of using either one of the wireless technology will depend on the application for which it is being used. Bluetooth is an economical, wireless solution that is convenient, reliable, easy to use and operates over a longer distance than infrared. The initial development started in 1994 by Ericsson. Bluetooth now has a special interest group (SIG) which has 1800 companies worldwide. Bluetooth technology enables voice and data transmission in a short-range radio.
There is a wide range of devises which can be connected easily and quickly without the need for cables. Soon people world over will enjoy the convenience, speed and security of instant wireless connection. Bluetooth is expected to be embedded in hundreds of millions mobile phones, PCs, laptops and a whole range of other electronic devices in the next few years. This is mainly because of the elimination of cables and this makes the work environment look and feel comfortable and inviting.
Origin Of Bluetooth
In 1994, Ericsson Mobile Communication initiated a study to investigate the feasibility of a low power, low cost radio interface between mobile phones and their accessories. The aim of the study was to find a way to eliminate cables between mobile phones and PC cards, headsets, desktops and other devices. The study was part of a large project investigating how different communication devices could be connected to the cellular network via a mobile phone. Ericsson's work in this area caught the attention of IBM, Intel, Nokia, and Toshiba. The companies formed the special interest group (SIG) in May 1998, which grew to over 1500 member companies by April 2000. The company jointly developed the Bluethooth 1.0 specifications, which was released in July 1999.
The engineers at Ericsson code-named the new wireless technology Bluetooth to honor a 10th century Viking king in Denmark. Harald Bluetooth reigned from 940 to 985 and is credited not only with uniting that country, but with establishing Christianity there as well. Harald's name was actually Blåtand, which roughly translates into English as 'Bluetooth'. This has nothing to do with the color of his teeth- some claim he neither brushed, nor flossed. Blåtand actually referred to Harald's very dark hair, which was unusual for Viking. Other Viking states included Norway and Sweden, which is the connection with Ericsson (literally, Eric's son) and its selection of Bluetooth as the code- name for this wireless technology
SNAP Wireless LAN I/O
SNAP Wireless LAN I/O™ extends your SNAP Ethernet I/O™ network to areas where it is impossible or uneconomical to run network wiring. Mobile machines and equipment, as well as equipment on the manufacturing floor, in warehouses, and in storage yards, for example, can now be monitored and controlled together with equipment on the wired network or in a separate wireless network.
Used with the same Opto 22 SNAP mounting racks and SNAP I/O™ modules as wired SNAP Ethernet brains, these wireless LAN processors provide a powerful and sophisticated communications and I/O handling system. SNAP wireless LAN brain functions are identical to their analog/digital/serial wired counterparts. The wireless LAN brain also supports the same comprehensive event/reactions and multiple, simultaneous communication options as the SNAP Ethernet brain.
The following diagram shows a network example using both wired SNAP Ethernet I/O and SNAP Wireless LAN I/O. Data from both wired and wireless I/O systems is available to all authorized users on the network for monitoring or control.
SNAP-IT Wireless LAN units are used with Symbol Technologies Spectrum24® access points (APs). An AP acts as a wireless LAN hub to connect wireless devices to each other and to a wired Ethernet network. APs, power supplies and cords, documentation, and a general-purpose antenna can be purchased through Opto 22.
SNAP Wireless LAN I/O can also be used in a completely wireless network, as shown below. A Spectrum24 access point can provide the basis for this wireless network. Wireless devices used with the network, such as wireless laptops, must be equipped with a wireless PC card compatible with the access point. These PC cards and documentation are also available through Opto 22.
For some uses a direct connection between one wireless computer and one SNAP Wireless LAN system may be sufficient. In this case a separate access point is not needed; the wireless PC card in the computer can be set to act as an access point.
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