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Java Tech Enthusiast
Java Tech Enthusiast
Nov 24, 2024 · Fundamentals

How Keyboard Input Traverses from Hardware to Software in Unix-like Systems

When a key is pressed, the keyboard controller generates an interrupt that pauses the CPU, invokes the interrupt handler and driver to translate the scan code into a character, writes it to a device file, which the X server reads and forwards via IPC to the focused window.

IPCInterruptOS
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How Keyboard Input Traverses from Hardware to Software in Unix-like Systems