When you turn down or up the volume on devices with either a wheel or button, what actually happens that allows it to sound quieter or louder?
In: Technology
U/toxiclay had half the story: the other half are the buttons which are just momentary switches that tell the microcontroller to lower the volume by software. Like in your phone, you can program the input to be contextual, as well, so if you find your volume button it will bring up the power optima for sitting down/resetting the phone, or take a picture if you’re in the camera app.
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