Instruction Set Architecture (ISA)

Instruction Set Architecture (ISA) is the set of instructions that a computer's processor can understand and execute. Think of it as the language that the hardware uses to perform tasks, ranging from basic arithmetic to complex operations. It defines the commands available, how they interact with memory, and the types of data the processor can handle. Essentially, ISA serves as the bridge between software and hardware, enabling programs to communicate effectively with the computer’s processor, ensuring that the software runs correctly and efficiently on the physical machine.