A pull-down resistor is a resistor that is connected between a digital input pin and ground, ensuring that the input pin reads a low voltage level (0V) when it is not actively driven high by another source. This is crucial in preventing floating input states, which can lead to unpredictable behavior in digital circuits. By using a pull-down resistor, designers can establish a defined low state, making it easier to control and predict the input signal.
congrats on reading the definition of pull-down resistor. now let's actually learn it.