Wi-fi Laptop Computers
Wi-fi technology enables wi-fi laptop computers to access the internet within a wi-fi zone anywhere in the world. The data transfer using a wi-fi connection is normally over specific radio frequencies. The advantage of having wi-fi on a laptop is that it removes the requirement for cabled internet connections or broadband, which in turn increases portability. All big and small brands of notebooks offer wi-fi adapters today on different laptops. The prices of laptops with wifi are always higher than the price of a notebook that only has LAN or LAN and Bluetooth.
The best place to check the prices and reviews of wi-fi laptop computers is on various comparison and review websites. There are several websites over the internet who offers ratings of different brands of laptops depending on their performance. You will even find details on various types of deals, discount and bargain offers on various models of laptop in the usa over the internet. Before you purchase a laptop, it is important to identify your requirements and then choose the size of the screen and colors if necessary. These days you can even get multiple colors like pink, blue, navy, orange etc and designs as well like retro, grunge etc.
What is Wi-Fi or wireless networking?
If you are planning to buy wi-fi laptop computers then you need to know what wireless networking is all about and what the various standards for wifi are. There are basically 3 categories of Wi-Fi standards that are most commonly found on wi-fi laptop computers. The oldest and the most commonly used standard is the 802.11b at 11Mbps within the 2.4GHz radio spectrum. The second standard is the 802.11g at 54Mbps speed and this also used 2.4GHz radio spectrum. If your laptop is enabled with 802.11g then it will be backwards compatible with the 802.11b standard. The third wireless standard is the 802.11a up to 54Mbps speed and this uses a 5GHz radio spectrum. This standard is not backwards compatible as different radio frequencies are used in this.
There are several varieties of wi-fi laptop computers available, which are enabled with the new 802.11n wireless although this has not been introduced officially as a standard. The 802.11n wifi adapter provides much faster networking as compared to the three standards but it is not backwards compatible. If you come across a laptop specification list that shows multiple standards listed like 802.11b/g then it means that it can be used in all the wi-fi standards applicable. If you want to buy wi-fi laptop computers that have the widest possible range of network connectivity then you need to find one that shows 802.11a/g/n wireless networking.
Different types of wi-fi standards are used for different purposes. Here are some of the wifi standards that are used more commonly:
1. 802.11a - 54Mbps/5GHz - This standard is most commonly used by businesses or companies
2. 802.11b - 11Mpbs/2.4GHz - This is the most widely used wi-fi standard and is used in home laptop computers as well as by businesses
3. 802.11g - 54Mbps/2.4GHz - This is the most commonly used high-speed wi-fi
4. 802.11n-draft - Proposed is 270Mbps Standard and uses 2.4 or 5GHz radio frequency spectrum although it has potential compatibility issues.
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