Questions tagged [irq]
An IRQ (interrupt request) is the process where a device triggers a hardware interrupt on a processor. When this happens, the processor stops (and saves) the current executing environment, and services the hardware's request. Furthermore, it is possible to prioritize these requests go service some before others.
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PS/2 vs. USB keyboards: performance and energy consumption
As far as I know, PS/2 keyboards are interrupt driven, while USB are polled. Typically a PS/2 keyboard was assigned IRQ_1 on Windows.
I'm not a hardware expert, but at a first glance it seems like the ...