Essay
M1
- Institution
- PEARSON (PEARSON)
This document was written in 2017 and was marked to the standard of merit.
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By: lascattergoola • 5 year ago
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Signal Analogue Digital SignalsSignals
Description An analogue signal is electrical based, the Unlike analogue, digital signals are not continuous
signal is continuous in frequency which because they are stored within a computer which
means it won’t stop until it is told to. These means that it can be broken down into binary (0 and
signals are not altered or edited either and 1’s). An example of a digital signal is CD’s,digital and
they are used in Vinyls, Analogue TV’s, TV DAB radios.
Cassettes and even in the human voice.
Strength The strengths of this kind of signal it is very Digital signals can be useful for copying and storing to
portable and costs less to maintain. an electronic device because all the electronic device
has to do is read the numbers to play it which means
the signal quality will stay the same and there is no
noise.
Another strength would be you don’t need a Digital signals are slightly more accurate than
computer to store this type of signal. analogue because they only have two states.
It is that it’s better to use analogue on things Digital signals are stored in binary format which means
such as a radio or TV. they will gather more information than an analogue
signal will.
An audio soundwave will be transferred as Digital is the best out of the two to use for electronic
an electromagnetic wave of the same devices such as computers or phones because the
frequency. values are in binary.
Weakness Weaknesses would be you can always get a One weakness for digital signals is that if any of the
clear signal if the frequency is not tuned right binary numbers cannot be read the signal will
that’s why sometimes you can hear automatically stop playing.
distortion,
also if the signal is stored in a cassette tape Another weakness would be that the signal can be
and you re-record that onto another tape, the stored in a magnetic device which can easily get
quality will reduce with each copy. damaged and break.
Analogue can pick up interference from
similar frequencies, they will also fade when
they are being transmitted over a long
distance
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