Since the invention of communicative technology, cell phones have evolved and developed immensely throughout the years. Now in the 21st century; cell phones are sold to masses and carry several unique functions.
For instance; most people own phones that can take high-quality photographs, short record videos, play music, send personalized messages, and download multimedia. Moreover; several families now prefer to discontinue the use of home phones, and instead have each member of the own family individuals cell phones.
Radio Waves and Cell Phones:
Mobile phones have become an essential tool for modern living. But how do these small electronic contraptions work? Other than fancy gadgets with several features, cell phones are like little radios that receive and send signals.
- Cell phones utilize radio waves that travel from the phone to several radio towers within an area. In other words, these radio waves go through from your cell phone, through the air, and towards massive radio towers.
- Radio towers receive cell phone signals with their antennas:
- Then, radio waves from your cell phone are sent to several other radio towers, one after another, until the waves reach a tower nearby the person you are calling.
- That tower then sends the radio waves back to the other phone. Final step explains that to convert the rushes back into the sound of your voice.
It is easy to see why people can communicate on cell phones in several local and international locations without losing reception. It is because cell phones rely on several radio towers to receive prompt and favorable signals from other telephones.
Why Are They Called ‘Cell Phones’?
Where does the term ‘cell phone’ originally come from? To trace back the origin of this term, we must first analyze the word ‘cell.’ Radio towers only collect radio waves within a certain distance. As a result, a mobile phone functions best when it is in close range of a radio tower.
However; for cell phones to receive continuous good reception, it must be in an area of several surrounding radio towers. Interestingly, most major cities divided into smaller sub-areas called ‘cells.’ In this context, each cell (area within a major city) consists of at least one radio tower. Thus the term ‘cell phone’ exists.
What is a PDA?
PDA stands for ‘Personal Digital Assistants.’ PDA’s are mobile phones that also feature miniature-computers. A popular example of this type of cell phone is the Blackberry. PDA’s are unique because they allow users to use several Internet functions directly on the cell phone. PDA phones; like regular cell phones, also rely on radio towers, signals, and cells.
Smartphone’s are an extension of the regular cell phone but combine a PDA and mobile phone within one unit.
Interesting Cell Phones Facts:
- The first commercial hand phone was introduced in 1983 and was a product of Motorola. This mobile phone weighed two pounds and cost $3,995.
- 1989 was the year of the Micro TAC. This cell phone was much more compact, light and versatile.