The wireless technology has already occupied the IT market for a long time. There are definitly classifying into the following sorts: six wireless devices and three types wireless techniology.
Wireless Devices
Wireless Internet
For wireless internet to be possible there should be a coverage area within which the connections are established. An area is surrounded by nodes to create a coverage area, and aerials to serve as sensor devices that detect signals coming form the nodes. The signal will in turn be sent to your computer to launch connection to the Internet. Because of this intricate process, wireless Internet is quite expensive and is not very popular. But surely, it will become the next big thing on Internet technology. Some companies are even offering wireless internet connection in Britain. However, wireless internet is vulnerable to extreme weather conditions because it uses radio signals to connect with devices.
Wireless Speakers
The more up-to-date computer and stereos use speakers connected via infrared or Bluetooth. Since infrared can be linked in straight lines only, speakers connected using this wireless ink need to have the main operating device such as the CPU or stereo in the same room with them. Bluetooth, on the other hand, works using radio waves that’s why the speakers and the operating device can connect even one is in a different room.
Wireless Phones
The convenience of using wireless phones makes them more popular to household use. They come in both digital and analogue, with the former more expensive than the latter. Analogue phones require an aerial to function, which means it will experience interference if the phone is far from the base. However, if your house is relatively smaller in area and you don’t use the phone that often, you might want to consider using an analogue phone. On the other hand, if you utilize the phone for business, the phones with Bluetooth technology that have a wider scope and clearer signal will suit you better. If you're the type who’s always traveling, using a cellular phone will be most beneficial for you. Cellular phones also use Bluetooth to send files and messages. However, they interfere with other wireless devices the most because they use the strongest frequency level to communicate.
Wireless Keyboard and Mouse
With speakers going wireless, it is no surprise that other computer hardware, such as the keyboard and mouse, will also be developed to connect through infrared. Since the mouse and keyboard are used near the CPU and monitor where most sensors are located, infrared is enough to establish a connection. Some companies, however, developed keyboard and mouse that use Bluetooth, but these are more expensive than the infrared-enabled ones.
Wireless Router
If you want to connect two or more PCs to wireless Internet, you will need to link the PCs together then establish an Internet connection using a wireless router. The computers connected by the router communicate through the use of Bluetooth and is therefore faster.
Wireless LAN
Access to another computer’s hard drive within a 45 metre radius from the main transmission point is made possible by wireless LAN. In place of a network card, a wireless LAN card enables exchange of data between the computers within the coverage area. In more advanced technology, a standard Cat5 computer cable can connect a notebook computer located anywhere in a building to the main organization file server and the Internet as well by wiring it to strategic spots within the building. In these spots are Wireless Transmission/Receiver Hubs which makes it possible for all notebooks to connect to the file server. If the hubs’ positions are calculated efficiently, they can let users situate themselves wherever they want and still operate through the corporate network.
Wireless Techniology
Infrared
The sensing of light by living things is a universal function. However certain portions of the spectrum of light, mainly those at the extreme end of the spectrum are invisible to the human eye. Infrared, which is located at a portion of the spectrum with wavelengths slightly longer than visible red is one such example. It is not invisible to all eyes, however. Recently it has been discovered that infra red may be used to transmit signals or pulses that could be interpreted by a receiving unit.
Short Wave Radio
Shortwave frequencies oscillate at a rate slower than that of Bluetooth. AM and FM commercial radio signals of today still use this signal. This provides a better signal to noise ratio thereby making blue tooth the medium of choice for data and information transfer, whereas shortwave is better used as a medium for transmitting analog audio.
Bluetooth
Bluetooth operates on a frequency set by an international committee that is assigned to standardize and synchronize the manner in which industrial, scientific and medical devices communicate. With its shorter range and lower power output, this ensures that interference is kept to a minimum.
