 Standard computing on a macroscopic scale can be defined as local, sequential, manipulation of discrete objects according to deterministic rules. Is has a natural interpretation in operations on the set of natural numbers N and a natural measurement function in the log operation \(\log: \mathbb{N} \rightarrow \mathbb{R}\) associating a real number to every natural number. The definition gives us an adequate information measure for countable infinite sets, including number classes like the integers \(\mathbb{Z}\), closed under subtraction, and the rational numbers \(\mathbb{Q}\), closed under division.