Address space
The total number of unique addresses that can be referenced using the machine’s addressing scheme.
For most binary computers, the address space is equal to 2^n, where n represents the bit width of the machine’s addresses. It defines the maximum storage capacity that can be addressed directly.
The key aspect is that the address space determines the range of distinct locations that can be reached with the machine’s addresses. It is dictated by the number of bits available to represent each address.
