Wi-Fi Wavelength??

[niksng]

First of all,, HI, everybody, I am Sonics from India I was searching on Wi-Fi modems and how other bluetooth enabled or wireless things work. I know that they catch some frequency and then convert it to something that is been sent on that wavelength but I don't know that how they work or on what kind of frequency they work?

I want to know :
1. How they convert data into digital things?
2. How they transfer and receive the digital data?
3. On what kind of frequency they are sent or received?
4. On what basis they(Wi-Fi) products have their range of catching the frequency?
5. What is the meaning of Mhz and Ghz, and how they can be used?
6. If you get what kind of information I am asking then any other info or link to any brief article is really appreciated.

Thanks.

[NobodySpecial]

1. How they convert data into digital things?
The data is already digital things, the memory in your computer stores everything as a pattern of 0 and 1 - look up "binary"

2. How they transfer and receive the digital data?
Once the data is just 0 and 1 you can send it like morse code, make a beep for 1 and no beep for 0. In practice it's a lot more complicated than this and there are clever ways of sending patters to reduce the power needed and allow more data to be sent faster.

3. On what kind of frequency they are sent or received?
For wifi and bluetooth around 2.4Ghz,

4. On what basis they(Wi-Fi) products have their range of catching the frequency?
These frequencies were chosen because at the time nothing else used them. No big powerful TV or Radio or army tranmsitters used these frequencies so they were free for experiments with little low power radios like bluetooth

5. What is the meaning of Mhz and Ghz, and how they can be used?
Hz is "things per second" in radio the signal goes up and down like a wave many times per second. M means mega = 1 million and G means giga = 1 billion, it's easier to write 2.4GHz than 2 400 000 000. It's just like writing lakh or crore but science uses multiples of 1000