What does oops mean?
OOPS has three meanings:
1. It is equivalent to "Oh". Often with the meaning of "self-surprise". Sometimes it also means sorry, but generally speaking this word cannot replace true apology.
2. "Open Course Plan" OOPS, Opensource Opencourseware Prototype System.
3. oops occurs when the system executes a soft interrupt, that is, the system immediately executes soft interrupt processing after your keys1_irq_isr function is released.
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