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Chapter 3

Digital and analog signals

5 min read9 sections
In this chapter · 9 sections
  1. Digital signals and logic levels
  2. Analog signals and the ADC
  3. DAC: digital to analog
  4. PWM: pulse width modulation
  5. Pull-up and pull-down resistors
  6. Debouncing buttons
  7. Voltage dividers
  8. Level shifting
  9. Sampling

A microcontroller understands only two things: digital levels (HIGH or LOW) and analog voltages converted into numbers. Knowing the voltage limits of each pin is what keeps your boards alive.

A microcontroller understands only two things: digital levels (HIGH or LOW) and analog voltages converted into numbers. Knowing the voltage limits of each pin is what keeps your boards alive.

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