In this article, the author states that a 64bit processor can theoretically reference 2^64 bytes of memory. What does he mean by this statement, or rather the word, reference?
Also, I visualize the entire RAM to be divided into little memory cells, each having an n-bit binary number that represents a given instruction or value that is needed for running any program in the computer. Is this visualization right?
If it is, then for a 64bit processor, what would be the number of memory cells in the RAM?