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ARM Architecture: what it is, how it works and what it does

Definition and characteristics of the ARM instruction set architecture, including the ARMv9-A specification.

Evidence-backed content 5 sources 06/09/2026

Definition

ARM architecture refers to the design of the instruction set architecture (ISA) used by processors in this family. According to technical specifications, this architecture defines the set of commands that software uses to manage the CPU's work.

Principles and Specifications

The instruction set is fundamental in determining which operations a processor can execute. In the context of the provided evidence, the ARMv9-A variant is specifically identified as the implemented instruction set architecture. This version represents a specific iteration of the ARM design, establishing the framework of commands available to the operating system and applications.

Applications and Scope

ARM architecture is the foundation for a wide range of electronic devices. The presence of the ARMv9-A specification indicates that the product in question uses a recent generation of this architecture, implying support for modern instructions and performance optimizations associated with this ISA version.

Interpretation in Products

When a product specifies an ARM architecture, such as ARMv9-A, it is indicating the type of instructions its processor can interpret. This is crucial for software compatibility, as applications must be compiled or emulated to function correctly on this specific instruction set.

  • Architecture: ARM
  • Specific version: ARMv9-A
  • Function: Defines the set of commands for CPU management