Description: The Interrupt Request Line is a hardware channel that allows peripheral devices to send signals to the CPU to interrupt its normal execution flow. This line is crucial in computer architecture, as it enables the CPU to respond to external events efficiently. When a device needs attention, it sends an interrupt signal through this line, causing the CPU to pause its current task and execute a specific interrupt handler to address the request. This mechanism is fundamental for multitasking and resource management in computing environments, as it allows multiple devices and processes to interact without conflicts. The Interrupt Request Line is used in both kernel mode, where the operating system has full control over the hardware, and user mode, where applications can request services from the operating system. The implementation of this interrupt system has evolved over time, allowing for greater efficiency and responsiveness in modern systems, which is essential for the overall performance of computers and electronic devices.
