Answer:
Although some devices can be controlled using nothing but their I/O regions, most real devices are a bit more complicated than that. Devices have to deal with the external world, which often includes things such as spinning disks, moving tape, wires to distant places, and so on. Much has to be done in a time frame that is different from, and far slower than, that of the processor. Since it is almost always undesirable to have the processor wait on external events, there must be a way for a device to let the processor know when something has happened.
That way, of course, is interrupts. An interrupt is simply a signal that the hardware can send when it wants the processor's attention. Linux handles interrupts in much the same way that it handles signals in user space. For the most part, a driver need only register a handler for its device's interrupts, and handle them properly when they arrive. Of course, underneath that simple picture there is some complexity; in particular, interrupt handlers are somewhat limited in the actions they can perform as a result of how they are run.
Answer:
Sorry, this is too vague to understand as you don’t have any charts, graphs, or anything
Explanation:
I don't understand what you are saying but I'm willing to help
Answer:
A header is at the top of the page and used for titles and epicas. The footer is used for footnotes or page numbers
Answer:
Table of Contents
Explanation:
The list at which all the titles of chapters, and different parts of reports such as diagrams, pictures, tables, and headings along with their page numbers is called table of contents.
