A digital system is a data technology that uses discrete (discontinuous) values. By contrast, non-digital (or analog) systems represent information using a continuous function. Although digital representations are discrete, the information represented can be either discrete, such as numbers and letters or continuous, such as sounds, images, and other measurements. In the course of the digital revolution, 35mm film has been displaced as a former industry standard to a large extent by the advantages of digital technology, which also provides the basis for the high standard of visual effects and postproduction we are accustomed to in modern cinema.