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Keyboard Key Groupings
Having looked at the physical construction and low-level operation of the keyboard, we now can turn out attention to higher-level considerations of its logical operation. I will start by first listing and discussing each of the keys found in a typical, modern keyboard. Obviously, each specific key doesn't need an explanation, but certain keys have interesting attributes or histories that I think are useful to know.
There are over 100 keys on a modern keyboard. Rather than discuss them all in one monstrous page, I have divided them into logical groups based on function. These are to some extent my own decision based on how I see the keys being organized. These logical groupings resemble the physical groupings you see when you look at some keyboards, but not completely. Physical groupings are more a function of keyboard layout, discussed elsewhere.
So in this section I take a more detailed look at the various groups of keys found on the modern keyboard. Where appropriate, I describe the various keys and what they do. Also included for each key group is a table, which shows all the keys in that group along with their normal "make" and "break" scan codes, and their sequential "key number" as first defined by IBM. Notes on the scan code tables: