program interrupt request

简明释义

程序中断请求

英英释义

例句

1.When the hardware signals a program interrupt request 程序中断请求, the operating system must respond immediately.

当硬件发出程序中断请求时，操作系统必须立即响应。

2.In real-time applications, a program interrupt request 程序中断请求 can cause delays in processing.

在实时应用中，程序中断请求可能会导致处理延迟。

3.The CPU prioritizes the program interrupt request 程序中断请求 to ensure timely execution of critical tasks.

CPU优先处理程序中断请求以确保关键任务的及时执行。

4.Debugging often involves monitoring program interrupt requests 程序中断请求 to identify issues in the code.

调试通常涉及监控程序中断请求以识别代码中的问题。

5.The system generates a program interrupt request 程序中断请求 when the user clicks a button.

当用户点击按钮时，系统生成一个程序中断请求。

作文

In the world of computing, efficiency and speed are paramount. One of the key mechanisms that enable computers to manage multiple tasks simultaneously is the concept of an interrupt. An interrupt is a signal to the processor emitted by hardware or software indicating an event that needs immediate attention. Among these interrupts, the program interrupt request plays a significant role in ensuring that programs can operate smoothly and efficiently. Understanding this concept is crucial for anyone interested in computer science or programming.When a program runs on a computer, it often needs to wait for certain events to occur, such as user input or data from a network. Instead of continuously checking for these events, which would waste valuable processing time, the program can issue a program interrupt request. This request tells the processor to pause its current activities and address the needs of the requesting program. This mechanism allows for better resource management and enhances overall system performance.The program interrupt request can be initiated by various sources, including user actions like keyboard presses or mouse movements, or by the system itself when a specific condition is met. For example, if a user opens a file, the application might send a program interrupt request to notify the processor that it needs to load the file data into memory. This way, the processor can respond promptly without wasting cycles on unnecessary checks.Moreover, interrupts can be categorized into two main types: hardware interrupts and software interrupts. A hardware interrupt is generated by external devices, such as a printer or a keyboard, while a software interrupt is triggered by the execution of a program instruction. The program interrupt request falls under the category of software interrupts, as it is initiated by the program itself to manage its execution flow.One of the advantages of using program interrupt requests is that they help maintain the responsiveness of applications. When a program can request the processor's attention through an interrupt, it can react more quickly to user inputs or other events. This responsiveness is particularly important in real-time systems, where delays can lead to significant issues. For instance, in gaming applications, the ability to process user commands promptly can greatly enhance the user experience.However, there are challenges associated with managing program interrupt requests. If too many interrupts are generated in a short period, it can overwhelm the processor, leading to what is known as 'interrupt storm.' This condition can degrade system performance and responsiveness, negating the benefits that interrupts are supposed to provide. Therefore, developers must carefully design their programs to balance the frequency and timing of program interrupt requests to avoid such pitfalls.In conclusion, the program interrupt request is a fundamental concept in computer science that facilitates efficient task management and responsiveness in programs. By allowing programs to signal the processor when they need attention, interrupts optimize resource usage and enhance the overall performance of computing systems. As technology continues to evolve, understanding and effectively implementing program interrupt requests will remain essential for developers and engineers alike, ensuring that applications run smoothly and efficiently in an increasingly complex digital landscape.

在计算机世界中，效率和速度至关重要。使计算机能够同时管理多个任务的关键机制之一是中断的概念。中断是由硬件或软件发出的信号，指示处理器需要立即关注的事件。在这些中断中，程序中断请求在确保程序能够顺利高效运行方面发挥着重要作用。理解这个概念对于任何对计算机科学或编程感兴趣的人来说都是至关重要的。当一个程序在计算机上运行时，它往往需要等待某些事件的发生，例如用户输入或来自网络的数据。与其不断检查这些事件，这会浪费宝贵的处理时间，不如让程序发出程序中断请求。这个请求告诉处理器暂停当前活动，处理请求程序的需求。这种机制允许更好的资源管理，并增强整体系统性能。程序中断请求可以由各种来源发起，包括用户操作（如键盘按键或鼠标移动）或系统自身在特定条件满足时发起。例如，如果用户打开一个文件，应用程序可能会发送一个程序中断请求以通知处理器需要将文件数据加载到内存中。这样，处理器可以迅速响应，而不必在不必要的检查上浪费周期。此外，中断可以分为两种主要类型：硬件中断和软件中断。硬件中断是由外部设备生成的，例如打印机或键盘，而软件中断是由程序指令的执行触发的。程序中断请求属于软件中断的范畴，因为它是由程序本身发起的，以管理其执行流程。使用程序中断请求的一个优点是它们有助于保持应用程序的响应性。当程序能够通过中断请求处理器的注意时，它可以更快地对用户输入或其他事件做出反应。这种响应性在实时系统中尤其重要，因为延迟可能导致重大问题。例如，在游戏应用程序中，及时处理用户命令的能力可以大大增强用户体验。然而，管理程序中断请求也面临挑战。如果在短时间内生成太多中断，它可能会压倒处理器，导致所谓的“中断风暴”。这种情况可能会降低系统性能和响应能力，抵消中断本应提供的好处。因此，开发人员必须仔细设计他们的程序，以平衡程序中断请求的频率和时机，以避免此类陷阱。总之，程序中断请求是计算机科学中的一个基本概念，促进了程序的有效任务管理和响应性。通过允许程序在需要关注时向处理器发出信号，中断优化了资源使用并增强了计算系统的整体性能。随着技术的不断发展，理解和有效实施程序中断请求将继续成为开发人员和工程师的重要任务，确保应用程序在日益复杂的数字环境中顺利高效地运行。