A Smartphone is a
mobile phone built on a mobile computing platform, with more advanced computing
ability and connectivity than a feature phone. The first Smartphone was the IBM
Simon; it was designed in 1992 and shown as a concept product. It was released
to the community in 1993 and sold by Bell South. The mobile phone had many
features such as a calendar, address book, world clock, calculator, notepad,
email client; it could also send and receive faxes, and games. It used touch
screen to select telephone numbers or create faxes and memos, text was entered
with a unique on-screen keyboard. Today’s Smartphone serve as a portable media
player, compact digital camera, and GPS navigation unit. Modern Smartphones
include a high resolution touch screen, web browsers and high speed data access
via Wi-Fi and mobile broadband. In 1996, the Nokia 9000 was released, it was
characterized by clamshell design with a feature phone display, keyboard and
user interface, high-resolution display of at least 640x200 pixels and a PDA
use interface under the flip-top. In 1998, it was followed by a Nokia 9110 and
in 2000 by Nokia 9110i, with improved browsing capability (Wikipedia, 18 April 2012).
Some people would say without communication we are hopeless, different communication
system such as mobile technology, telephony, radio and TV is so important in
our lives, it is often used in our daily dealings with people around us,
entertain us, and aid us in our businesses and many more. Interestingly the
telephone system is one of the most useful communication devices since it was
invented in 1877 until now (emilgen, 2011).
Wednesday, April 18, 2012
Wednesday, April 11, 2012
By 1904 there were
over three million phones in the US, still connected by manual switchboard
exchanges. By 1914, the US was the world leader in teledensity and had more
than twice the teledensity of Sweden, New Zealand, Switzerland, and Norway. The
longest lasting physical style of telephone was introduced in the early 20th
century, including Bell’s model 102. A carbon granule transmitter and
electromagnetic receiver were united in a single molded plastic handle, which
when not in use sat in a cradle in the base unit; it had direct connection of
the receiver to the line, while the transmitter was induction coupled, with
energy supplied by a local battery. The coupling transformer, battery, and
ringer were in a separate enclosure. The dial switch interrupted the current
very briefly disconnecting the line 1-10 times for each digit. In 1960s the
touch-tone signaling started replacing the rotary dial (Wikipedia, 14 March
2012).Theodore N.Vail led the Bell Companies to create his “universal service”
which was completed in 1915 from New York to San Francisco. Vail also used the
wireless system to begin overseas cable installations, connecting the US to
other countries. In the late 1940s the first commercial mobile phones were
installed and microwave radio was introduced for long distance use. The
scientist at Bell Labs invented the transistor and the course of history
changed, in 1948 there were 30 million phones in service. Fredrick Kappel
brought technological advancement to the system. New phones were introduced
like the Princess phone which was in 1959, in 1963 the first Touch-Tone phones
were released and in 1965 the Trimline was commenced. By 1971 there were over
100 million phones in service (Gregory Russell, 1998).
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