Two substantially identical data processors, operating in parallel, include each a general-purpose computer and an associated data store connected to each other by way of a respective logic network, the two networks being substantially identical and intercommunicating for recurrent comparisons of their...http://www.google.es/patents/US4030074?utm_source=gb-gplus-sharePatente US4030074 - System for checking two data processors operating in parallel
System for checking two data processors operating in parallel
