I was just reading from wikipedia the following about information:
From the stance of information theory, information is taken as a sequence of symbols from an alphabet, say an input alphabet χ, and an output alphabet ϒ. Information processing consists of an input-output function that maps any input sequence from χ into an output sequence from ϒ. The mapping may be probabilistic or determinate. It may have memory or be memoryless.
I'm just guessing here, but is the input alphabet the two states of a bit (0 and 1) and the output alphabet governed by the datatypes of the executing program when those bits are accessed?