What is Analog Signal?

An analog signal is a continuous representation of a physical quantity, such as voltage or current, that can vary over a range of values. Analog signals are typically used to transmit audio and video signals, and are transmitted as waves through electrical or electromagnetic means.

What is Digital Signal?

Digital signals are discrete representations of data that can only take on a limited number of values. Digital signals are typically used to transmit data and are transmitted as pulses through electrical means. Digital signals are more resistant to noise and interference than analog signals and are more easily processed and transmitted over long distances.

Diagram of Analog Signal and Digital Signal:

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Difference between Analog Signal and Digital Signal:

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SR. NO.	PARAMETER	ANALOG SIGNAL	DIGITAL SIGNAL
1	Explanation	An analog signal is a continuous representation of a physical quantity, such as voltage or current, that can vary over a range of values. Analog signals are typically used to transmit audio and video signals, and are transmitted as waves through electrical or electromagnetic means.	Digital signals, are discrete representations of data that can only take on a limited number of values. Digital signals are typically used to transmit data and are transmitted as pulses through electrical means. Digital signals are more resistant to noise and interference than analog signals, and are more easily processed and transmitted over long distances.
2	Continuity	Analog signals are continuous.	Digital signals are discrete.
3	Range of Values	Analog signals have an infinite number of possible values.	Digital signals have a limited number of values.
4	Noise and Distortion	Analog signals are prone to noise and distortion.	Digital signals are less affected by noise.
5	Distance	Analog signals are transmitted over long distances through electrical or electromagnetic means.	Digital signals are transmitted over shorter distances through electrical means.
6	Transmission Method	Analog signals are typically transmitted as waves.	Digital signals are transmitted as pulses.
7	Application	Analog signals are typically used for transmitting audio and video.	Digital signals are used for transmitting data.
8	Measurement and Analysis	Analog signals are easier to measure and analyse.	Digital signals require specialized equipment for measurement and analysis.
9	Accuracy	Analog signals are generally less accurate.	Digital signals are more accurate.
10	Security	Analog signals can be more easily intercepted and manipulated.	Digital signals are more secure.
11	Interference	Analog signals are generally more susceptible to interference.	Digital signals are less susceptible.
12	Efficiency	Analog signals are generally less efficient in terms of bandwidth and storage.	Digital signals are more efficient.
13	Environmental Factor	Analog signals can be affected by temperature and humidity.	Digital signals are not affected by these factors.
14	Process	Analog signals are generally more difficult to process.	Digital signals are easier to process and manipulate.

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