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The Conversion of Analog Signals to Digital Signals

Because I am a musician, I have known for quite some time the way analog and digital signals work.  I love listening to vinyl because of the fact that music is always an analog sound wave, and a vinyl record does not have to undergo any kind of conversion in order to get the music to your ears.  The grooves on the vinyl begin as analog, and the needle amplifies them so that you hear the original analog sound wave.  Of course, technology has come to a point in which most of us consider analog technology to be a thing of the past, so you could imagine my shock when I read an article explaining how most of our digital devices still use analog signals in order to communicate with one another.  The article can be found here: http://www.microchip.com.  It was definitely something that blew my mind when I first took a look at it, as I did not ever expect that current digital devices had any use for analog signals.

The article goes on to explain that these analog sensors that detect certain things will then use an analog to digital converter in order to make the analog signal digital so that it can be displayed upon your screen.  While I understood that this is the type of technology that is used on musical interfaces for computers in order to take the original analog signal and put it into your computer software for editing purposes, I did not realize just how much this sort of thing is used in a whole bunch of other devices.

I now feel a whole lot better educated on modern tech and the use of analog signals and sensors that are then converted into digital data.