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  3. give 3 examples of true analog instruments and explain how...

Question: give 3 examples of true analog instruments and explain how...

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Give 3 examples of true analog instruments and explain how they are analog (e.g. a mercury thermometer is analog because the mercury level is a continuous variable.)
Assuming a 5V max output, what is the Arduino C function and value (between 0- 255) to output a 3.5V signal using an Arduino Mega. Show what the PWM signal would look like (e.g. voltage vs time). Provide proper labels and values in the plot.
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