Computer Hardware
An IRQ allow interface cards to:

Pass data from one card to another
Pass data to the computers memory
Pass data to the CPU to be processed
Interrupt the CPU to request service

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Computer Hardware
You have just installed a new internal PCI modem on you desktop. It will not dial out. what is the problem?

the phone line is plugged into the line-in port on the modem card
The port speed is set too high
the phone line out of the wall is plugged into the phone port on the modem card
the modem has not been set up in control panel properties
None of these

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