Universal Computer-constructor
Codd designed a self-replicating computer in the cellular automaton, based on Wang's W-machine. However, the design was so colossal that it evaded implementation until 2009, when Tim Hutton constructed an explicit configuration. There were some minor errors in Codd's design, so Hutton's implementation differs slightly, in both the configuration and the ruleset.
Read more about this topic: Codd's Cellular Automaton
Famous quotes containing the word universal:
“I have been maintaining that the meaning of the word ‘ought’ and other moral words is such that a person who uses them commits himself thereby to a universal rule. This is the thesis of universalizability.”
—Richard M. Hare (b. 1919)