I believe that the first digital media
was lightning, making the first digital medium the atmosphere.
The atmosphere produces both visual and
audio, lightning and thunder, through the transmission of
electricity. Electricity on, electricity off. It uses binary to
create light-shows in the sky. Bearing that earth's atmosphere was
created millions of years ago, this digital media has been around for
quite some time. Although this media satisfies some definitions, unfortunately it does not satisfy others which bring into account human expression. But although not human expression, lightning may be the self-expression of another.