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8 Events

When I used to read fairy tales, I fancied that kind of thing never happened, and now here I am in the middle of one!

Lewis Carroll, Alice in Wonderland

What just happened?

We talked above about control flow, how one makes decisions about what to do in making calculations. We talked about this like the entire computer processing resource was dedicated to this task. But it isn’t so.

Computers may be fast at some calculations, but they are only so fast, and when there are many things to do, one shares and takes turns.

So aside from do this and then do that, events happen.

Also, a computer may be fast enough that it literally has nothing to do. What does it do then? When a processor goes to sleep, how do we get its attention?

You are reading the right chapter to know.