Arduino Uno/Embedded Systems

Discussion in 'Embedded Systems and Microcontrollers' started by RdAdr, Sep 26, 2016.

  1. RdAdr

    Thread Starter Member

    May 19, 2013
    So consider an embedded system like Arduino.

    If it has analog input pins then the voltage that I apply on these pins goes to some analog to digital converter. So the voltage gets sampled.

    But what about the digital input pins? Where does the voltage go? I imagine that it is also sampled but not by an ADC, but by some other circuit that directly uses that value.