The digital rain, a code visualization of the Matrix, is seen in the opening sequences of the Matrix films, on monitors in the real world and in various shapes and colors. It seems to be made up of random glyphs and characters, sometimes mirrored, some Japanese, some Arabic numerals.
Is there any distinguishable pattern or meaning to it, that can be seen in the films (or any of the canonical works)? Or is it simply random, meant purely as a visual effect?
Also: When it takes a 3D shape, as it does some times with Neo (and in the opening sequence of Reloaded for instance), is it not a very low resolution representation of the matrix, as opposed to what Cypher claimed it to be in The Matrix? It seems like even low resolution video would be less consuming of any computer's processing power and produce much more detail.