The "main storage" normally means that part of internal storage into which instructions and other data must be loaded for subseq

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问题 The "main storage" normally means that part of internal storage into which instructions and other data must be loaded for subsequent execution or processing. In large computing systems, the term "main storage" is(71) to "memory". "Buffer" mainly indicates a special-purpose storage or storage area allowing, through(72) storage, the data transfer between two functional units having different transfer characteristics. A buffer storage is used between non-synchronized devices or where one is(73) and the other is parallel or between those having different trans far rates. "(74) (memory)" is also a special-purpose buffer storage, smaller and faster than main storage, used to hold a copy of instructions and data obtained from main storage and likely to be needed next by the processor. "Register" is commonly composed of a part of internal storage having a specified storage(75) and usually intended for a specific purpose.

选项 A、volume
B、space
C、capacity
D、size

答案C

解析 在内部存储器中,“主存(储器)”一般指必须装入指令和其他数据,供后继执行或处理的那一部分。在大型计算系统中,术语“主存”比术语“内存”更受人偏爱。“缓存”指一种专用存储器或存储区,通过暂时存储,使具有不同传送特征的两个功能单元之间能作数据传送。缓冲存储器用于非同步器件之间,串行器件与并行器件之间,或者具有不同传送速率的器件之间。“高速缓存”也是一种专用的缓冲存储器,与主存储器相比体积小却速度快,用来保存从主存储器得到而很可能为处理器下一步所需的指令和数据的一个副本。普通“寄存器”由内部存储器的一部分组成,具有规定的存储容量,通常安排作专用。
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