| | Digital physics -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-09) |
 | | For example, the computer could be a huge (Click link for more info and facts about cellular automaton) cellular automaton as suggested by Zuse (1967). |
| | Or a universal (A hypothetical computer with an infinitely long memory tape) Turing machine, as suggested by Schmidhuber (1997), who pointed out that there is a very short program that computes all possible computable universes in an asymptotically optimal way. |
| | Some try to identify single physical particles with simple bits. |
| www.absoluteastronomy.com /encyclopedia/d/di/digital_physics.htm (540 words) |
