Instruction Set

Noun · Development

Definitions

  1. The complete set of machine-level instructions that a CPU can execute, defining the interface between software and hardware. x86, ARM, and RISC-V are instruction set architectures (ISAs) with fundamentally different design philosophies.

    In plain English: The basic vocabulary of commands a processor understands — every program ultimately gets translated into these simple operations like 'add two numbers' or 'move data.'

    Example: "Apple's switch from x86 to ARM instruction set with the M1 chip changed everything about Mac performance per watt."

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