Address bus
The address bus is a bus that carries the addresses of memory locations from the processor to the main memory, so the main memory knows where to read or write data.
The number of bits the address bus has determines how many memory locations the
processor can access. For most modern computers, the address bus is 64 bits
wide, which means that the processor can access
Older computers had narrower address buses, like 32 bits, which meant they could
only access