"Analog technology refers to electronic transmission
accomplished by adding signals of varying frequency or amplitude
to carrier waves of a given frequency of alternating electromagnetic
current. Broadcast and phone transmission have conventionally
used analog technology.
Analog also connotes any fluctuating, evolving, or continually
changing process. Analog is usually represented as a series
of sine waves. The term originated because the modulation
of the carrier wave is analogous to the fluctuations of
the voice itself."
(Definition from What?is.com)
It is planned that by 2008, Australian television stations
will cease to broadcast analog television and switch to broadcasting
for digital televisions. For more information about this,
see the digital television