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What is Understanding I/O Modules and Interrupts about?

I/O modules are needed to interface between the CPU and a wide variety of peripherals that operate at different speeds, transfer varying amounts of data in different formats. I/O modules function to interface the CPU and memory with external devices like displays, printers, disks, and networks. Interrupt controllers like the 8259A help the CPU manage interrupts from multiple devices by determining priority and providing the correct interrupt vector to the CPU.

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domainname9

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