• 1. Single Cycle Instruction: 单周期指令

• 1.In an SISD architecture there is a single instruction cycle; operands are fetched serially into a single processing unit before execution.
  在单指令流单数据流结构中，有单一的指令周期，在执行前，单个处理机按序取操作数。
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• 2.The basic operating cycle of a processor during which a single instruction is fetched, interpreted, and executed.
  基本操作周期的处理器在一个单独的指令是拿来，解释和执行。
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• 3.In Chapter 2, we learned that the processor fetches and executes a single instruction during each machine cycle.
  在第二章中，读者知道了在每个机器周期内处理器取出并执行一条指令。
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