Instruction Set Categories

Understanding RISC processor instruction categories

This is an easy foundational question about computer architecture that tests recall of how modern processors organize their instruction sets. It appears frequently in interviews at firms that build or optimize trading systems, market-data infrastructure, or other latency-sensitive software.

The question asks you to identify and distinguish between the broad functional classes that RISC (Reduced Instruction Set Computer) architectures use to structure their operations. Understanding these categories is essential for reasoning about processor design, instruction-level parallelism, and how software maps onto hardware.

• The role of instruction classification in CPU design
• How RISC philosophies differ from CISC approaches
• Memory hierarchy and data-movement instructions
• Arithmetic logic and control flow in processor execution