It is therefore only possible to state that at this or that point in time the digital signal has this or that value. It does not allow any statement about what the signal looked like between the two points in time. Since the time points for digital signals are very close together, depending on the application only a few microseconds, the observer does not recognize the digital signal as a string of state values, but as a continuous signal.
Such a digital signal represents a point in time and an amplitude value. It consists of a string of several logical states which form the amplitude value. Decisive are the digital states (0 or 1) and not the signal level of the logical states. This depends on the logic used.