Is digital better than analogue? Here we discover that there are limitations when storing waveforms digitally. We learn that the consequence of sampling at a fixed rate is an upper limit on the frequencies that can be represented, called the *Nyquist frequency*.

In addition to the limitations of sampling, storing each sample of the waveform as a binary number means that there is also limited precision in the way we represent amplitude.

To find out what would happen if we tried to sample a signal that contains energy above the Nyquist frequency, see aliasing