| 术语 | I/O exchange buffering |
| 释义 | I/O exchange buffering 输入输出交换缓冲技术 A specific technique for I/O buffering which prevents or avoids the internal movement of data. Buffers are either filled, empty, or actively in use, by an I/O device. Exchange buffering relates to distinct areas set aside for work and for buffering. This technique requires some additional programming but allows both I/O units and CPU to be active a greater percentage of the time than in singlebuffered I/O schemes. 一种用于防止或避免数据内部移动的输入输出缓冲技术。缓冲区一般处于充满、空出以 及正为某一输入输出设备所使用等三种状态之一。交换缓冲技术的特点与设置的工作区和 缓冲区为不同存储区有关,它需要附加的编程;但是与单缓冲技术相比,它能够使输入 输出设备和CPU以更大比例的时间投入运行。 |
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