This process will introduce errors into the data and limits the information in them,
simply because we replace a continuously varying signal, which can have any value between
two limits, with a discrete set of points - information between the points is lost- and with a
limited number of possible values (quantization). This creates errors in both the amplitude and
frequency content and much of the efforts in improving the ADC process are related to
minimize these errors. Before getting into that discussion, it is illustrative to describe how the
most common ADC’s works in principle.