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In Computer Organization Architecture, a set of instructions refers to the collection of machine-level commands that a processor can execute. This is also known as the Instruction Set Architecture (ISA) and serves as the interface between software and hardware. Key Elements of a Set of Instructions: Operation Code (Opcode): Specifies the operation to be performed (e.g., ADD, SUB, LOAD). Operands: Data or memory addresses involved in the operation. Instruction Format: Defines how instructions are structured, including lengths of opcode and operands. Addressing Modes: Techniques to specify the location of operands (e.g., direct, indirect, immediate).