Absolute Address

An explicit identification of hardware, such as a memory location, peripheral device, or location within a device. For example, memory byte 107,443, disk drive 2 and sector 238 are absolute addresses. Although the action may have been initiated through many "layers of abstraction" at a higher level, some instruction in some software routine must use an absolute address to activate every hardware component in the computer.

A fixed address in memory. The term absolute distinguishes it from a relative address, which indicates a location by specifying a distance from another location. Absolute addresses are also called real addresses and machine addresses.