Wireless+networks

= Wireless Networks = Introduction: Wireless networks have enhanced the way we use computers and the internet. They have gotten rid of tangled cables and slow dialups. With technologies like Bluetooth, WiFi and 3G our lives have been changed.

WiFi﻿[[image:http://www.allo-astuces.com/html/images/wifi.jpg width="121" height="82" align="right"]]
WiFi stands for **‘wireless fidelity’**. This is the technology used in most WLAN s. What WiFi does is that it allows computers and laptops to connect to the internet and send and recives data when it is in a range of a wireless network. It has a long range for connection. You can find WiFi's at airports, schools, resturants.

[[image:http://pirun.ku.ac.th/~b5005614/bluetooth-picture.jpg align="right"]]
Bluetooth is a **‘Personal Area Network’**. It’s a device that is for short range connection. The Idea of Bluetooth is to get rid of all cables such as usb cables that connect our computers to hardware devices such as mice and printer. Bluetooth devices contain small, low-power radio transmitters and receivers. When devices are in range of other Bluetooth devices, they detect each other and can be 'paired' (connected).

3G
3G stands for **‘3rd Generation’**, for mobile networking and telecommunications. It is applications services include wide-area wireless voice telephone, mobileInternetaccess, video calls and mobile TV, all in a mobile environment. Before 3G there was 2G and 1G. These were used for laptops and mobiles to access the internet. 