| 术语 | memory hierarchy |
| 释义 | memory hierarchy 存储器分级体系,存储层次;［记忆阶组］ The organization of a computer system's memory, specifically, the order in which the central processing unit (CPU) searches the memory devices available to it in order to find and access information. In a memory hierarchy the fastest, smallest devices come first and are followed by successively slower but larger memory devices. A general search order for a powerful microcomputer system would be: high speed cache memory, random access memory (RAM), hard disks, floppy disks, and finally, any tape drives. 计算机系统存储器的一种结构,特别是指CPU为了寻找和存取信息而对它所有的存储器进行搜 索的顺序。在存储器分级体系中,最快、最小的设备在第一级,随后是一些较慢但容量较大的 存储设备。对于功能较强的微计算机系统,一般的搜索次序是: 高速缓冲存储器、随机存储 器、硬盘、软盘,最后是磁带机。 参阅secondary memory。 |
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