document updated 15 years ago, on Aug 27, 2008
This is a fun mental game.
While you can go totally low-level, it probably makes more sense to choose a few specific formats at each layer to maintain over time, and have all digital preservation projects store their data in those formats.
physical layer
- include its own playback device... output at 5v TTL, or LED, or audio? (e.g. morse code)
image format
Storage medium
intractible?
see also