The Modern World's Mobile Phone
Praise The Lord Jesus Christ
Mobile phones
IN THE EARLY 1990s,THE MOBILE PHONE
(Cell phone) was a rare luxury, but in
recent years it has outsold almost every
other electrical gadget- as a professional
tool, domestic convenience,and even a
fashion accessory. Mobile phones have also
generally shrunk in size,due to improvements
in rechargeable batteries,which now store
more electricity for longer in a smaller
package ,and to smaller , more efficient
electronics that use less electricity.A
"mobile" is basically a low- power radio
receiver-transmitter,plus a tiny microphone
to convert sounds into electrical signals,
and a small speaker that does the reverse.
When the mobile phone is activated,it sends
out a radio signal that is answered by near
by nearby mast transmitter- receivers.
The phone locks onto the clearest signal
and uses this while within range ( the range
of each transmitter is known as a cell).
The phone continuously monitors signal
strength and switches to an alternative
transmitter when necessary.The phone's
liquid crystal display (LCD)shows numbers,
letters, symbols,and colour pictures.Newer
models have a larger screen for more complex
colour images,and commonly incorporate a
camera,radio,and MP3 functionality.
Smartphones, which are increasingly
widespread, contain additional software and
more may be downloaded.Smartphones typically
Offer Internet and email access,PDA- like
functions(see pp.568-569),and may even
contain GPS navigation software.
Amazing
ReplyDelete