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IRQ (Interrupt Request) - Definition

IRQ is an abbreviation for Interrupt Request. It is a signal from a hardware device, such as a modem or a mouse, indicating that it needs the CPU's attention. In Personal Computers, IRQs are sent along specific IRQ channels associated with a particular device. It is therefore important to ensure that two devices do not share a common IRQ channel. When working with computer hardware, installing and removing devices, the system relies on interrupt requests. There are default settings that are configured in the system BIOS and recognized by the operating system. These default settings can be altered by advanced users.


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