👉 ISA, or Instruction Set Architecture, is a fundamental blueprint that defines the set of instructions a computer processor can execute directly. It specifies how software interacts with hardware, detailing the format and operation of data, including registers, instructions, addressing modes, and control flow. By standardizing these instructions, ISA ensures compatibility between different processors from the same manufacturer, simplifying software development and enabling efficient execution of programs across diverse computing environments. This architecture acts as a bridge between high-level programming languages and the low-level machine code executed by CPUs, allowing developers to write software that can run consistently on various hardware platforms.
