The numerical identification of each storage location which is wired permanently into a computer by the manufacturer.
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. See base address, address mode and abstraction layer.
However, PURLs implement a basic aliasing system that resolves to an absolute address in place of an alias.
Rather than specify an absolute address, a reference can be a set of instructions that locate the referred document from the current position--for example, to go up a directory and find a named document there.