Instructions Set Architecture

Instruction Set Architecture (ISA) is the set of basic commands that a computer's processor understands and executes. Think of it as the language the computer speaks, defining how instructions are written, what operations they perform, and how data is handled. The ISA acts as a bridge between software (programs) and hardware (the physical machine), ensuring they work together smoothly. Different types of computers have different ISAs, which can affect their performance and compatibility with software. In essence, ISA is the blueprint that guides the design of a processor’s capabilities and how it processes information.