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I'm looking at this IC: link here
And noticed under "typical application" a simple circuit diagram. What is the purpose of the capacitor that connects Vin directly to ground?
How does this affect the current/voltage being applied to vdd and the LED?
I have virtually no understanding of how/why capacitors are used in general. My very limited electronics experience has just about covered resistors. Would appreciate small words, and possibly somewhere to get further information (free online courses?)