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What is Digital Signal?
A binary signal, also known as a logic signal or digital signal, is a signal with two distinguishable levels which is HIGH or LOW (1 or 0).
Please choose more than 1 answer which is correct.
What code in Arduino IDE to trigger a digital output?
In order to trigger HIGH pin 3, what is the code we should use?
What code in Arduino IDE to read a digital input?
To read a digital signal from pin 2, what is the code we should use?