Alternatively known as a direct address, machine address, or real address, an absolute address is an exact memory address utilized by hardware devices or software programs. They are used to store data in a specific location to make it more easily retrieved at a later date.
Absolute addresses use numerical values used for identification. For example, they can be the number of bytes the location is from the beginning of the storage medium's memory, such as byte 145. Or, in hardware components, a physical location like sector 22 or disk drive 3.