Cellphones

Cellphones are everywhere. They’re the most popular and widely-used gadget today. Most professionals and parents have it. It’s very useful and convenient, compact and great for long-distance communication. It can even do so many things these days from storing names and phone numbers, organizing your tasks and appointments, calculate math, send or receive email, browse information from the Internet, play games, take digital pictures and videos as well as send and receive them, record music and voice and integrate other devices.

This device is the most sophisticated version of the telephone, but did you know that it is actually a radio? Radio because the cellular phone uses radio waves in transmitting communication. Hence, if you are to dig this up, the cellphone is actually a combination of two valuable technologies -- the telephone and the wireless radio.