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| -rw-r--r-- | docs/how_keyboards_work.md | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/docs/how_keyboards_work.md b/docs/how_keyboards_work.md index 5697a21872..bbd22a2788 100644 --- a/docs/how_keyboards_work.md +++ b/docs/how_keyboards_work.md @@ -33,7 +33,11 @@ The firmware does not send actual letters or characters, but only scancodes. Thus, by modifying the firmware, you can only modify what scancode is sent over USB for a given key. -## 3. What the Operating System Does +## 3. What the Event Input/Kernel Does + +The *scancode* is mapped to a *keycode* dependent on the keyboard [60-keyboard.hwdb at Master](https://github.com/systemd/systemd/blob/master/hwdb/60-keyboard.hwdb). Without this mapping, the operating system will not receive a valid keycode and will be unable to do anything useful with that key press. + +## 4. What the Operating System Does Once the keycode reaches the operating system, a piece of software has to have it match an actual character thanks to a keyboard layout. For example, if your |