Know Your Circuits Analog Vs Digital Electronics

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					Know Your Circuits Analog Vs Digital Electronics

Information is everywhere. Even if we cannot directly perceive our
environment to be information, it is embedded all around us. Strolling
through a library or surfing the net is an easy way to spot how
information is stored. But how does one consider their favorite
television program to be information? Or how is a long-distance phone
call from your grandmother considered information?

The answer is the way we record and transmit everything around us. Our
brains do a good job dealing with what we directly perceive with the five
senses. For everything else that is transmitted through some electronic
device, sights, sounds, numbers and words are sent to us through circuits
of information. There are two major forms of circuit transmission: analog
and digital.

Analog was first developed in the 1920s and came to popular use during
World War II. Digital came into being in the 1960s and became widely used
in the 1980s by libraries. But just because digital is newer does not
mean that an electrician school or electrician apprenticeshipprogram
won't cover the two. Both are still used today, and many electronic
devices use a combination of both.

Analog is a faithful electronic recording of the original information
source. For example, a voice recorded with analog takes the actual wave
forms of the voice and imprints them directly onto the tape, which a
reader will play. Digital takes an original signal source and translates
that information into a series of numbers-binary code of 1s and 0s.
Digital receivers take those numbers and translate them back to the
original information for playback.

Electrician training will guide trainees to know the difference between
the two seemingly opposite systems. While it may seem that digital
circuits require more work to do the same thing as analog, there are some
advantages to digital, especially as today the amounts of information
being stored and transmitted is growing exponentially.

Signal

Analog sends a constant signal no matter if a receiving device is turned
on or off. So for example, televisions, which were mostly analog, could
have the screen turned off, but its receiver is still always on. Digital
can be turned on and off, and thus could save electricity.

Storage

Since digital turns information into code, it has a much larger capacity
to store information than analog, which requires a set amount of space
for a set amount of information. Digital can also compress large amounts
of code by finding patterns, thereby saving even more digital space.

Integrity
Because analog requires a physical form of storage, it can be subjected
to wear and tear, thus deteriorating over time. Digital is simply the
information about the original signal. The quality and integrity will
therefore never degrade so long as the information can be read. This also
has the advantage of being able to be duplicated and transmitted with
zero loss of quality.

Knowing the difference and the advantages of each is an essential aspect
of electrician apprenticeship programs. Being in control of the means of
storing and communicating information is an essential aspect of modern
life.

Visit Mohawk College for more information on industrial electrician
apprenticeship.

Michael Zunenshine is a Copywriter at Higher Education Marketing, a
leading Web marketing firm specializing in Google Analytics, Education
Lead Generation, Search Engine Optimization (SEO), Mobile SMS Alerts,
Social Media Marketing and Pay Per Click Marketing, among other Web
marketing services and tools.

				
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