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● 衡量计算机的主要性能指标除了字长、存取周期、运算速度之外,通常还包括 (5) ,因为其反映了 (6) 。

(5)

  • A. 外部设备的数量     
  • B. 计算机的制造成本
  • C. 计算机的体积    
  • D. 主存储器容量大小    (6)
  • A. 每秒钟所能执行的指令条数 
  • B. 存储器读写速度
  • C. 计算机即时存储信息的能力  
  • D. 计算机保存大量信息的能力  
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