Is a computer a reconfigurable causal network?

I've just read the published proceedings of the 2010-2011 ACM Ubiquity symposium on the Turing question "What is computation?"  (The Computer Journal, Vol. 55, num. 7, pg 799, 2012)  Is a computer simply a reconfigurable causal network (including possible feedback)?  I think of "information" as "knowledge", see my blog of 25 Feb. 2012.