Originally Posted by
CornedBee
Yes, it is. You classify the possible states of the basic element of your medium (a magnetic particle, a dot on the optical medium, a time interval on the electrical line, a single atom, ...) into three classes: 0, 1, and (possibly) invalid. Then you build the technical means to measure and set these, with voltage as the common language of all such components. Now, these technical means may be extremely involved, very complex, and all that, but in the end it still just translates one representation into another. Measuring magnetism should be your area of expertise, not mine.