Question

The hardware mechanism that allows a device
to notify the CPU is called
​

Answer 1

Answer:

13.2. 2 Interrupts. Interrupts allow devices to notify the CPU when they have data to transfer or when an operation is complete, allowing the CPU to perform other duties when no I/O transfers need its immediate attention.

Answer 2

Answer:

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The hardware mechanism that allows a device to notify the CPU is called bus.