Differentiate between Analog and Digital Signals

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Differentiate between Analog and Digital Signals?

analog signal and digital signals


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Analog signal
is any continuous signal for which the time varying feature (variable) of
the signal
is a representation of some other time varying quantity, i.e., analogous to another
time varying signal. It differs from a digital signal in terms of small fluctuations in the
signal which are meaningful.
digital signal
uses discrete (discontinuous) va
lues. By contrast, non
digital (or analog)
systems use a continuous range of values to represent information. Although digital
representations are discrete, the information represented can be either discrete, such as
numbers or letters, or continuous, such
, images, and other measurements of
continuous systems
Logic Design 10CS33
Dept. of CSE, SJBIT
Analog technology records waveforms
as they are.
Converts analog waveforms into set of
numbers and records them. The
numbers are converted
into voltage
stream for representation.
Uses continuous range of values to
represent information.
Uses discrete or discontinuous values
to represent information.
Can be used in various
platforms and under operating systems
like Linux, Unix, Mac OS and
Computing and electronics
Analog signal is a continuous signal
which transmits information as a
response to changes in physical
Digital signals are discrete t
ime signals
by digital modulation.
Analog clocks indicate time using
Digital clocks use numeric
representation to indicate time.
computer uses
continuous physical phenomena such as
electrical, mechanical, hydraulic
quantities so as to solve a problem.
Digital computers represent changing
quantities incrementally as and when
their values change.


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