Security systems
One common example of an operation or operations where the implementation
of wireless technology may supplement or replace hard wired implementations
is in security systems for homes or office buildings. The operations
that are required detecting whether a door or window is open or
closed may be implemented with the use of hard wired sensors or
they may be implemented with the use of wireless sensors which are
also equipped with some type of wireless transmitter (infrared,
radio frequency, etc. to transmit the information concerning the
current state of the door or window.
Television remote control
Another example would be the use of a wireless remote control unit
to replace the old hard wired remote control units that were sometimes
used in the television industry. Some televisions were previously
manufactured with hard wired remote controls which plugged in to
a receptacle or jack in the television whereas more modern televisions
use wireless remote control units.
Cellular telephones
Perhaps one of the most well known examples of wireless technology
in action is the cellular telephone. These instruments use radio
waves to enable the operator to make phone calls from many locations
world-wide. They can be used anywhere that there is a cellular telephone
site to house the equipment that is required to transmit and receive
the signal that is used to transfer both voice and data to and from
these instruments. (For more information see the article on mobile
phones). |