I think it's pretty clear that information (data) isn't stored in the brain in the same way that we store data digitally, but some of the digital methods that are used may shed some insight.

For example, we can normally store one of 256 different values in just eight bits, but that means just using those eight bits once, for the single value that's being stored. However, if we add seven more sets of eight bits we can arrange them two dimensionally, like the squares on a chessboard, and not just read across each set of eight bits but also down each set of eight bits; instead of just storing eight individual values from eight sets of eight bits we've now doubled it to sixteen.

Then of course, not every bit of data needs many bits to be stored: single boolean (true/false) values only need a single bit, of course.

And there are even more complex ways of organising a given number of bits, not just limited to their dimensional arrangement, but by using different sets of bits as pointers to different combinations of data bits from different sets of data bits, so that each data bit may by compounded with other non-directly related data bits to store yet additional values, with each individual data bit effectively being part of many different simultaneous values.