Adressebare

Adressebare is a term used to describe resources that can be uniquely located and controlled by a specific address. In computing, addressability refers to the property of being directly targetable by an address, whether for memory locations, devices, or data elements.

Memory and addressing. Addressable memory uses an address space—the width of the address bus determines how many locations can be addressed. In byte-addressable systems, each address points to a single byte; this is common in modern architectures. Some systems use word-addressing, where an address selects a word rather than a byte, reducing the granularity of addressing. The practical limit of addressability is the available address space, which grows with larger address widths.

Devices and I/O. Addressability also applies to input/output devices, where peripherals exposed on buses have addresses that software can read from or write to directly. This allows precise control and management without scanning the entire system.

Networks and the Internet of Things. Addressable devices in networks or IoT have unique network addresses (such as IP or MAC addresses) that enable identification, routing, and remote management.

Specialized hardware. Addressable components include addressable LED strips, where each LED has a distinct address for independent color and brightness control. This concept extends to other controllable arrays and components in embedded systems.

In software, addressing is fundamental to accessing data: variables, arrays, and objects are retrieved by their addresses or references, sometimes through pointers or indices.

Etymology and usage. The term appears across languages with similar meanings, bearing in mind spelling variants such as adressebar or adressbar in different linguistic contexts.