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When a device needs the CPU to perform a task what does it need to do?
The device needs to signal the CPU to get its attention. It typically does this through an interrupt request line (IRQ).
Which line will be activated when an output device require attention from CPU?
The interrupt line, of course.
A line of a motherboard bus that a hardware device or expansion slot can use to signal a CPU that the device needs attention is called?
IRQ
Why is interrupt driven IO better then polling?
Polling checks constantly the status of de I/O device, wasting CPU cycles. However with Interrupt driven I/O the device sends a request to the CPU to indicate that it needs attention. So, in some cases, Interrupt driven I/O will be better than polling, because doesn't waste CPU cycles checking when the device needs attention.
Why CPU is not called as peripheral device?
what are cpu device
Would a CPU be a processing device?
Yes, the CPU itself is a processing device, it is the "brain" of the computer. CPU = Central *Processing* Unit
Which is not a peripheral device webcam external hard drive CPU or keyboard?
CPU is not a peripheral device.
What are the components of computer hardware?
Ram, cpu, storage device, output device, input device, communication device
Why you need interrupt?
An interrupt is a signal from a device attached to a computer or from a program within the computer that causes the CPU to stop executing the current program and figure out what to do next. It enable input/output device communicate or get the attention of the processor, and execute a program that need more attention.
Is a CPU a software or hardware device?
No. A CPU is hardware.
Is CPU is an output device?
No, the CPU is the Central Processing Unit. A monitor or printer would be an example of an output device.
How can interrupt be generated?
when an i/o device is ready to do the process with cpu and the cpu not is not know the status of.. trhe i/o device,then i/o device sends a request to service it
