What is the characteristic of a digital signal compared to an analog signal?

A digital signal is characterized by its ability to maintain a more consistent quality over long distances compared to an analog signal. This is primarily because digital signals represent data in discrete values, usually in binary (0s and 1s), which makes them less susceptible to noise and interference. As signals travel over longer distances or through various mediums, analog signals can degrade due to interference and distortion, leading to a loss in quality. Digital signals, on the other hand, can utilize error correction techniques and regeneration methods to preserve the integrity of the information being transmitted.

This consistency in quality is particularly advantageous in modern communication systems, where maintaining the fidelity of the signal over vast networks is crucial. Therefore, the attribute of a digital signal ensuring a more stable and reliable transmission over longer distances is a primary differentiation from analog signals.