Wireless data communication has been the driving force in the 21st century, as we go to some particular venue and we may detect some strong connection, it called as Hotspots where location of wireless data services are available, for your information world-wide growth rate is 350% a year and by 2010 revenue from hotspots will exceeds RM12 billion. Wireless Local Area Network (WLAN) essentially identical to standard lacal area network (LAN). a computers on WLAN must have wireless network interface cards.
Do we realise where ever we go back and forth there are always a wireless network available. Have we ever thought How Wireless Works??? >> we will discuss on how it transmits signals without wires over the air or on in space. Basically the wireless operates using radio frequency technology (RF), which means a frequency within a electromagnetic spectrum associated with radio propagation. when an RF current is supply to antenna, an elctromagnetic field is created that then is able to propragate through space. The cornerstone of a wireless network is a device known as an access point(AP) the primary job of an access point is to broadcast a wireless signal that computers can detetct and tune into. An Access point also often serves a link to the resources available on the wires network, such as internet connection.
What are Radio Waves, ; it is when electric current passes through a wire it can creates a magnetic field around the wire - as magnetic radiates, creates an electromagnet radio waves that spreads out through space in all direction, radio waves can travel long distances, and can penetrate non-metallic objects. WLAN's use digital transmissions because digital signals are discrete (solely @ separate and distinct) and more stable.
now we moved to ...
Wireless technologies and Device that used WiFi
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