Mobile Phones - A Wonder or A Blunder
In a mob, if you don't hear the beep of one or two
mobile phones, you can consider yourself deaf. Yes, these
Cell phones have invaded our lives and we spend most of our
time with this small wonder glued to our ears. In a world
that's full of change and dynamic, where people are
constantly on the move across miles, there is a dire need
for communication and the cell phones do the trick for
you.
These Wireless telephones otherwise called PCS phones are
provided with built-in antennas and are easily
portable 'coz of their size. These small wonders play a
vital role when the land lines are down. This tiny hand-
held gadget has intruded our life and has changed the way
we communicate. Messaging has increased and it threatens
to put a full stop to verbal communication. A new language
of texting with acronyms (btw, asap etc.) and shortcut
(oic, cya etc.), s has evolved due to the need for speedy
messaging.
The cell phones have become a fashion accessory. Especially
for teenagers. They provide the biggest market. They spend
most of their pocket money on pre paid cards. The popular
"Expression- series by Nokia focuses on teenagers and
includes games and easy text messaging.
Cell phones make a person easily accessible. You can
contact a person whenever you need them wherever they are.
For people living faraway from their homes, a cell phone is
an easy and cheap mode of communication. This offers a
solution to the high bills paid for long distance calls
(ISTD). Hence using cell phones has become a necessary
habit.
This awesome device connects people across the globe with
its roaming facility and their cost continues to decrease
with their increased use. The cost will continue to drop as
the market size grows and more capable and increasingly
cheaper to operate technologies happen.
The future cell phones will be integrated with add on
technologies like a personal digital assistant, Global
Positioning System etc. which will endow a more productive
business ambiance and will also provide for the expansion
of trade networks across our planet and who knows maybe
across alien planets too.
There are many useful features in a mobile phone.
The 'hands free' feature permits drivers to use their
cellular phone without lifting or holding the handset.
Message alert: feature wherein a blinking light indicates
that a phone call came in. Voice mail a computerized
answering service that automatically answers your call,
plays a greeting in your own voice and records a message is
another key feature in most cell phones.
Since each cell is designed to use radio frequencies only
within its boundaries, the same frequencies can be reused
in other cells not far away with little or no interference.
The reuse of frequencies enables a cellular system to
handle a huge number of calls with a limited number of
channels.
Cell phones play an essential role in the mobile
communication of the modern world. But, what about those
dark ages before cell phones came into existence? How did
people handle mobile communications? Well, they used
radiotelephones. The radiotelephone system had one central
antenna tower per city, and perhaps 25 channels available
on that tower. This central antenna meant that the phone in
your car needed a powerful transmitter -- big enough to
transmit 40 or 50 miles (about 70 km). It also meant that
not many people could use radiotelephones -- there just
were not enough channels.
How the Cellular System works:
Continued at
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