HOW THE CELLPHONE WORK

Introduction to different feature of cellphone

Around the world there are million of people use cell phones.

The cell phones are the wonderful gadget from it we can talk to anyone, anywhere in this planet.

The first cell phones is invented by Charles E. Alden in year 1906.

a successful demonstration of a true, fully functioning mobile phone was dated way back 1973, demonstrated by Martin Cooper of Motorola Company.

The walkie-talkie is a half –duplex device

The Cell phones is the full –duplex device

The every cell has her own base station of frequencies

When you first power up the cell phone

All cell phones have special codes associated with them. These codes are used to identify the phone, the phone's owner and the service provider And that code called S.I.D.(system identification code).

When your S.I.D. code reach FCC

When you send the S.I.D. code to FCC (Federal Communication Commission).They verify the S.I.D code and they match both S.I.D. code and then send the message of activation.

Then MTSO will catch the frequencies from cell phones

When the activation message come the cell phones catch frequencies from MTSO(Mobile Telephone Switching Office) and keep check the frequencies from the Database.

Then in the last the cell phone is connected with other cell phone

When the cell phone catch the frequencies then the cell phones are connected To other cell phones this is called two way radio, connected to your friend.

The cell phones had change the world and it is easy way to connected to your friend

anytime, anywhere.

Thank you