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An Essential Guide on How to Understand Analog Signals and Inputs
We live in an analog world where people use an infinite number of colors to paint in addition to the infinite number of smells that exist and the same number of stars in the sky as well. Everyone must understand that all the analog signals have one common theme which is their infinite possibilities. the reason why digital signals, on the other hand, have a limitation in their values is that they have finite as well as discrete possibilities. Anyone working with electronics must deal with both digital and analog signals as well as analog and digital inputs and outputs too. This article aims at educating people on what analog signals are and the difference between the same and their digital counterparts.

Analog signals refer to some time-varying quantities which are used to transmit data and the process entails passing them from different devices until they reach the intended receiver. Typically, they are transmitted from one destination to another via wires even though they can also pass through the air via radio waves. There are numerous examples of analog signals with one of them being the one that exists between speakers and computers audio cards. Drawing a time versus voltage graph of analog signals shows a continuous and smooth curve or line and the signals can also be limited to a minimum and maximum range of values with an infinite number of values in existence in the range.

Analog inputs are just analog signals but then they are either transmitted into a device to bring out the right info or processed and transmitted to give digital signals as well. Anyone looking for an example of an analog signal should consider most video and audio transmissions which are transmitted and recorded through analog signals such as the composite video that has a range of 0V and 1.073V and comes from an RCA jack. Most audio signals are usually analog for example when the signal that is generated by a microphone which is made up of analog frequencies and combines with harmonics to create beautiful music.

Digital signals apart from having finite possibilities, they are characterized by two major values either 0V or 5V. Their graphs give two different results when one has a close view and when they move and view them from some distance. One of the most significant differences between analog and digital signals is therefore that the former are smooth and continuous while the latter are stepping, square and discrete.

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