| 术语 | internal and external interrupt |
| 释义 | internal and external interrupt 内部及外部中断 A special control signal that diverts the attention of the computer to consider an extraordinary event or set of circumstances, i.e., it causes program control to be transferred to a special subroutine that corresponds to the stimulus. Many levels of control can be exercised by the numerous forms of interrupts provided. The interrupts from external sources serve to synchronize the computer program with the readiness of peripheral devices, including, other computers, to transmit or receive data. Internal interrupts serve to synchronize the computer program with termination of I/O transfers and to signal the occurrence of an error. 计算机中一种专门的控制信号,使计算机引起注意,考虑如何处理一种异常事件或某一 特定状态。即这种中断意味着程序控制权要转到一个相应的专门子程序。机器的中断有 许多等级。外部中断的作用一般是用以保持程序和外围设备的同步,包括与其它计算机的 同步以传输或接收数据。内部中断一般用于保持程序和输入输出传送的同步以及用于标志 一种错误的发生。 |
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