The computer could be, for example, a huge cellular automaton (Zuse 1967), or a universal Turing machine, as suggested by Schmidhuber (1997), who pointed out that there exists a very short program that can compute all possible computable universes in an asymptotically optimal way.
Drugi, ki so si zamislili Vesolje kot ogromen računalnik, so še: Wolfram, Schmidhuber in nobelovec 't Hooft.