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简述RISC指令系统和CISC指令系统的区别。
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简述RISC指令系统和CISC指令系统的区别。
时间:2022-01-05 18:42
关键词:
计算机系统知识
中级数据库系统工程师
CMS专题
计算机软件水平考试
答案解析
<p> 与CISC相比,RISC指令系统的指令数量少,只有一些使用频率高的简单指令;支持的寻址方法少;指令长度固定;易于进行流水线操作;容易使用编译器进行优化。<br> 而CISC指令系统中有很多不常使用的复杂指令,支持的寻址方式多,增加了硬件的复杂性,不利于流水化。</p>
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