### equipment | phone:

Cell phone
* Most cell phones are battery-operated.
* Most cell phones have a silent setting that vibrates rather than rings with an incoming call
  - offer voice mail as a feature
  - operate by sending signals to a nearby antenna
  - use some variation requiring multiple key strokes per letter
* Some cell phones are flat, sort of like a deck of cards.
* Some cell phones have an infrared port can share an Internet connection with a Palm wirelessly
  - the ability to send and receive e-mail also
  - work with limited success
* allow business to be conducted while driving to and from appointments.
* are a common way for parents to remain in contact with children throughout the day
  - growth industry
  - very recent phenomena
* are also a quick method of communication between staff members
  - source of convenience and safety for most people
  - very common
* are an example of our increasing mobility in the information age
  - individual's personal preference
  - arguably one of the most successful consumer products of all time
  - as much of a fashion statement today as any piece of jewelry or eyewear
  - bad for children
  - basically an accessory of necessity nowadays
* are common in Haiti
  - place at business meetings and seminars
  - different
  - duplex
* are everywhere and cost less to use than in the States
  - in Shanghai, Beijing, and other major cities
  - extremely popular among teenagers
  - far more widely used here than in the United States
  - for the socially challenged
  - less common because they're too expensive
  - like little radios that communicate with towers scattered around our landscape
  - line of sight devices with limited power for transmission
* are located in backpacks
  - shelfs
  - low bandwidth
  - now ubiquitous
  - of little use against hornets
  - often the primary means for communicating with teens on the go and behind the wheel
* are one of the most intricate devices used by people on a daily basis
  - way kids express their identity and communicate with one another
  - portable telephones
* are the embodiment of convenience
  - safest to use, during a thunderstorm
* are ubiquitous in Italy and have surpassed the number of regular telephones
  - the big cities of Asia and Latin America
  - widespread
  - wireless phones
* are, bottom line, radios with a connection to a telephone company.
* can act as modems for our laptops.
* can be a danger for everyone driving on rural highways, including farmers
  - lifesaver for many professionals
  - become cameras or bar code readers
* can cause accidents in many ways
  - gasoline pumps to explode
  - keep people in touch when they are miles apart
  - lose their signal connection in the mountains
  - receive video and other moving images, for example
  - send and receive hundreds of frequencies
* do give some people problems
  - sometimes serve a higher purpose
  - power buttons for a reason
  - tiny yet audible speakers and microphones
* help a family keep in touch.
* make it possible to get a reservation or talk to family while driving down the road
  - slaves of their owners, who are powerless to avoid annoying innocent bystanders
* operate on three different systems
  - within cells , and they can switch cells as they move around
* produce powerful radio waves that literally microwave the user's brain.
* provide a connection to the outside world, although reception is spotty.
* take a driver's attention off the road and place the driver and other motorists at risk
  - less then an hour to turn on
* use low power, while ovens use high power
  - low-level microwave radiation to communicate between the caller and a base station
* use microwave signals to transmit data or human voices
  - human voice or data
  - the airwaves just like radio stations do, but they are considered private
* work as two-way radios
  - by transmitting radio waves to base stations that plug calls into a network
  - in some areas, especially high on cliffs
  - on line of site signal
+ Mobile phone, Technology: Telephone :: Messaging
  * Cell phones work as two-way radios. They send electromagnetic microwaves from base station to base station. The waves are sent through antennas. This is called wireless communication.
  * Cell phones are now a big problem on the street. Before the problem was that people drove and talk with their cell phones. Today, people are so addict to their phones, that they text while driving. This distraction causes lots of accidents and sometimes it can kill. In Quebec there is one person on five that admit texting and driving at the same time. In summary, cell phones become more dangerous and on the street and people have to stop use their phone while driving.