Complex sentence: Since digital signals take on one of only two different values, a disturbance would have to be about one-half the magnitude of the digital signal to cause an error; this property of digital circuits can be exploited to make signal processing noise-resistant.
Split into simpler sentences: Since digital signals take on one of only two different values, a disturbance would have to be about one-half the magnitude of the digital signal to cause an error. This property of digital circuits can be exploited to make signal processing noise-resistant.