Phones

Introduction:

A mobile phone or cell phone is an electronic device used to make mobile telephone calls across a wide geographic area, served by many public cells, allowing the user to be mobile.

               

                

How it works?

To make the first communication with the mobile phone when it is switched on, you have to use the keyboard. The mobile phone has a lot of applications and software. Normally, the mobile phone is used to call or send SMS text messaging but it has other applications to entertain, listen to music, make photos and videos, and it can be used to record a lot of things.

How signals are transmitted?

When the user talks, the microphone changes the voice into waves, these are transmitted by the air to a BSC station. The entire world is divided into cells that have a BSC station in all the cells. It is used to receive the waves and send it to a BSC (Base Station Controller) that redirect the waves to another BSC station where the other user is situated. Two consecutive cells cannot use the same range of frequencies to avoid interferences. The same frequencies can be used in cells that are far enough away since they won’t disturb the other communications.