Wireless networks work victimisation radio waves rather than wires to transmit information between computers. that is the easy version. If you are curious to grasp what is going on on in additional detail, then it’s all explained during this article.
Ones and Zeros.
I’m positive you recognize that computers transmit information digitally, victimisation binary: ones and zeros. this can be the simplest way of act that interprets alright to radio waves, since the pc will transmit ones and zeros as completely different styles of beep. These beeps ar therefore quick that they’re outside a human’s hearing vary — radio waves that you simply cannot hear are, in fact, all around you all the time. that does not stop a pc from victimisation them, though.
The method it works may be a heap like Morse. you most likely already understand that Morse may be a method of representing the alphabet so it may be transmitted over radio employing a dot (short beep) and a touch (long dash). it had been used manually for years, and have become an excellent method of obtaining info from one place to a different with the invention of the telegraph. additional significantly for this instance, though, it’s a pure binary numeration system, a bit like a computer’s ones and zeros.
You might think about wireless networking, then, as being like Morse for computers. You plug a combined radio set and transmitter in, and therefore the pc is in a position to transfer its equivalent of dots and dashes (bits, in computer-speak) to urge your information from one place to a different.
All regarding Frequencies.
You might marvel, though, however the pc might probably transmit enough bits to send and receive information at the speed it will. After all, there should be a limit on what proportion may be sent in an exceedingly second before it simply becomes useless nonsense, right? Well, yes, however the key to wireless networking is that it gets around this drawback.
First of all, wireless transmissions ar sent at terribly high frequencies, that means that additional information may be sent per second. Most wireless connections use a frequency of two.4 Gc (2.4 billion cycles per second) — the same frequency to mobile phones and microwave ovens. As you may understand, though, a frequency this high implies that the wavelength should be terribly short, that is why wireless networking solely works over a restricted space.
In addition, wireless networks create use of a method referred to as ‘frequency hopping’. They use dozens of frequencies within the vary they’re given, and perpetually switch between them. This makes wireless networks additional proof against interference from alternative radio signals than they’d be if they solely transmitted on one frequency.