What is the actual course of action when I press a key on the keyboard and it is displayed on the shell?

Question

I am using a universal usb keyboard, Linux 2.6.27 with gnome desktop, gnome-terminal and bash shell. I am interested to know what is happening in the software. How are special characters from my keyboard interpreted with some character encoding and where do character images come from?

Answer 1

Linux input level with USB drivers gets from scancodes keyboard (mainly "KEY 1 DOWN" "KEY 1 UP").

X uses its layout to convert scancodes to key codes and X input events.

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Answer 2

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