Digital electronics is a branch of electronics concerning digital circuits which apply boolean logic which are represented by electronic logic gates.
The ADC device converts electric voltages to discrete quantities(digital signals or digital information).
True and false are represented by different binary values with 0 volts for true and 5 volts for false. Digital circuits ae less vulnerable to noise but consume a lot of energy. Digital circuits were invented in the twentieth century and is the foundation for digital communications and computers.