Question

Distinguish between Analog and Digital signals.

Answer 1

Signals are functions that carry information. We use signals to convey information from place to place. In electronics, signals are mainly in the form of varying voltages. There are two types of signals. Both are very much different in their characteristics. In this question, we have to differentiate between the two signals.

Complete step by step solution:
Electronic signals in general can be classified into two. They are analog signals and digital signals. These signals vary in properties. They both are used to convey signals. The major difference between the two signals is that analog signals are continuous signals and whereas digital signals are discrete signals.
The figure below shows the difference between analog and digital signals.

We can tabulate the difference between the two signals as follows,

Analog signal	Digital signal
Analog signals are continuous signals.	Digital signals are not continuous, they are discrete signals.
We can represent analog signals in the form of sign waves.	We can represent digital signals in the form of square waves.
The values of voltage will be in a continuous range	The values of voltage will be discontinuous.
Records the information as it is.	Converts the information into binary form.
These signals are used in analog devices.	Digital electronic devices like computers, smartphones, smartwatches, etc. use these signals
Examples: Any natural sound, human voice, data read by analog devices.	Electronic signals, computer signals, data read by digital devices.

Note:
Compared to digital signals analog signals lack perfection and efficiency. They can be subjected to distortions. The main disadvantage of analog signals is that they are not resilient to noise. Noises are unwanted signals that destroy the perfection of signals. This will affect the quality of transmission. This problem is not faced by digital signals.