interrupt request

简明释义

中断请求

英英释义

例句

1.In embedded systems, an interrupt request 中断请求 can be triggered by a timer.

在嵌入式系统中，可以通过定时器触发interrupt request 中断请求。

2.The network card generates an interrupt request 中断请求 when it receives a data packet.

当网络适配器接收到数据包时，它会生成一个interrupt request 中断请求。

3.The CPU processes an interrupt request 中断请求 from the keyboard when a key is pressed.

当按下一个键时，CPU处理来自键盘的interrupt request 中断请求。

4.When the printer is out of paper, it sends an interrupt request 中断请求 to the operating system.

当打印机缺纸时，它向操作系统发送一个interrupt request 中断请求。

5.The system's response time improves when it efficiently handles interrupt requests 中断请求.

当系统有效处理interrupt requests 中断请求时，响应时间会提高。

作文

In the world of computer architecture, the concept of an interrupt request plays a crucial role in managing how a computer processes multiple tasks simultaneously. An interrupt request is essentially a signal sent to the processor by hardware or software indicating that an event needs immediate attention. This allows the CPU to pause its current operations and address the new task at hand, which enhances the overall efficiency of the system. Without the mechanism of interrupt requests, computers would struggle to perform multitasking effectively, leading to slower performance and a less responsive user experience.To understand the significance of interrupt requests, we must first look at how processors operate. A CPU executes instructions in a sequential manner, meaning it processes one instruction at a time. However, modern computing environments often require the handling of various tasks concurrently. For example, while a user is typing a document, the computer might also need to manage peripheral devices like a printer or respond to network activity. This is where interrupt requests become essential.When a device needs the CPU’s attention, it sends an interrupt request to signal that it has data ready to be processed or that it requires some action. The CPU, upon receiving this signal, will complete its current instruction and then switch its focus to the interrupting device. This swift response ensures that high-priority tasks are handled promptly, which is vital for maintaining system stability and performance.There are different types of interrupt requests, including hardware interrupts and software interrupts. Hardware interrupts are generated by external devices, such as keyboards, mice, or network cards, when they need to communicate with the CPU. Software interrupts, on the other hand, are triggered by programs when they require a service from the operating system, such as file access or memory allocation.The management of interrupt requests is handled by the Interrupt Controller, which prioritizes these requests based on their urgency. This prioritization is crucial because it determines the order in which tasks are addressed. For instance, a request from a keyboard should typically take precedence over a request from a non-essential background application. By efficiently managing interrupt requests, the system can ensure that critical tasks receive the attention they need without unnecessary delays.Moreover, the design of interrupt request mechanisms has evolved over the years, with advancements aimed at improving efficiency and reducing latency. Technologies like Direct Memory Access (DMA) allow certain devices to communicate with the system memory without continuous CPU intervention, further optimizing the handling of interrupt requests. This innovation not only frees up CPU resources but also accelerates data transfer rates, significantly enhancing system performance.In conclusion, the concept of an interrupt request is foundational to the operation of modern computers. It enables systems to respond dynamically to various inputs and events, facilitating efficient multitasking and resource management. As technology continues to advance, the methods of handling interrupt requests will likely evolve, but their importance in ensuring responsive and effective computing will remain paramount. Understanding interrupt requests is essential for anyone interested in computer science, as it encapsulates the intricate interplay between hardware and software that drives our digital world forward.

在计算机架构的世界中，中断请求的概念在管理计算机如何同时处理多个任务方面扮演着至关重要的角色。中断请求本质上是由硬件或软件发送给处理器的信号，表明某个事件需要立即关注。这使得CPU能够暂停当前操作，处理新的任务，从而提高系统的整体效率。如果没有中断请求机制，计算机将难以有效地进行多任务处理，导致性能变慢和用户体验不佳。要理解中断请求的重要性，我们必须首先看看处理器是如何工作的。CPU以顺序方式执行指令，这意味着它一次处理一条指令。然而，现代计算环境通常要求同时处理各种任务。例如，当用户在输入文档时，计算机可能还需要管理外围设备，如打印机或响应网络活动。这就是中断请求变得至关重要的地方。当设备需要CPU的注意时，它会发送中断请求以表示它有数据准备好被处理或需要某些操作。CPU在接收到此信号后，将完成当前指令，然后将注意力转移到中断设备上。这种快速响应确保了高优先级任务得到及时处理，这对于维护系统稳定性和性能至关重要。有不同类型的中断请求，包括硬件中断和软件中断。硬件中断是由外部设备生成的，例如键盘、鼠标或网络卡，当它们需要与CPU通信时。另一方面，软件中断是由程序触发的，当它们需要操作系统的服务时，例如文件访问或内存分配。中断请求的管理由中断控制器处理，该控制器根据紧急程度对这些请求进行优先级排序。这种优先级排序至关重要，因为它决定了处理任务的顺序。例如，来自键盘的请求通常应优先于来自非关键后台应用程序的请求。通过有效管理中断请求，系统可以确保关键任务在没有不必要延迟的情况下获得所需的关注。此外，中断请求机制的设计随着时间的推移而不断发展，旨在提高效率并减少延迟。直接内存访问（DMA）等技术允许某些设备在不需要持续CPU干预的情况下与系统内存通信，进一步优化中断请求的处理。这一创新不仅释放了CPU资源，还加快了数据传输速率，显著提升了系统性能。总之，中断请求的概念是现代计算机操作的基础。它使系统能够动态响应各种输入和事件，促进高效的多任务处理和资源管理。随着技术的不断进步，处理中断请求的方法可能会不断演变，但它们在确保响应迅速和有效计算中的重要性将始终保持至关重要。理解中断请求对任何对计算机科学感兴趣的人来说都是必不可少的，因为它概括了推动我们数字世界前进的硬件与软件之间复杂的相互作用。