In the memory to where byte units store information, or obtain the correct information to be stored, each byte unit given a unique memory address , called a physical address, called the real address or absolute address .
Numbering starts at address 0, plus 1 each time sequentially, so the physical memory
address space
is linear growth. It is
a binary
number represented, is
an unsigned integer
, written in the format of
a hexadecimal number
. It is present in the external CPU
address bus
on addressing
the physical memory
address signal, the address conversion is the final result. A
memory chip
unit addressing stage, coupled to the processor and CPU address bus, respectively.
In computer science,
a physical address,
also called
a real address
,
the binary address
which is
the address bus
, the presence of electronic form, so that
the data bus
can access the
main memory
of a particular memory cell of the
memory address
. And the
virtual memory
of the computer,
the physical address of
the term used to distinguish multiple
virtual addresses
. Especially in computer memory management unit (MMU) address conversion memory, the virtual and physical addresses refer address before and after conversion by the MMU. In
a computer network
, the
physical address
sometimes it is
the MAC address
synonyms. This address is actually used in
the data link layer
, and not, as its name implies
physical layer
on.