Answer / rachuri_sree

Digital signal means either True or False. Only 2 states
will be there. Example for this is pushbutton,Hot metal
detector,proxy etc.
Analog means the signal will vary with conditions. out put
may be 4-20mA, 0-20mA,0-10V,0-5V etc. examples are
pressure,flow transducers,RTD,Thermocouple etc

Answer / pallavi singh

analog means the quantity can take an infinite number of
continuous values in a range.for example weight of a
person,height of the person,pressure of fluid etc.
digital means only discrete values like on and off;0 and
1,0volts and 5 volts,true and false....etc

Answer / pdbhatt69

Analog means continusous varying system, for example it can
vary from 0 to maximum value continusouy sinusoidal or ramp
or by folowing any curve but continuos whereas in digital
there are ony two state(0 & 1) which changes in step from 0
to 1 i.e. discrete values.In Digital system, signal can be
reproduced at receiving end exactly with discrete values
signals received.

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