| Keyword | Definition |
|---|---|
| Complex Instruction Set Computer (CISC) | Processor architecture that uses a wide range of specialised instructions that may each take multiple clock cycles to execute |
| Instruction Set | The range of opcodes that a processor supports, each performing a slightly different function |
| Reduced Instruction Set Computer (RISC) | Processor architecture that uses a limited range of instructions which can each be executed in a single clock tick. |