How do circuit boards make electronics do things?
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I’m taking a programming class and just had this click for me, so i’ll add a little onto what others have said.
At their core, electronics really only understand if they have electricity flowing or not. So circuit boards and other electronics are made up of billions of tiny “light switches” that turn the power on to certain parts if the right conditions are met (ex. it senses you typed a number, it will light up the switch in memory a certain way to remember that number!). They used to be huge when they were invented, which is why you needed one person physically flipping all the switches. We’ve found ways to condense them down, which is why our tiny electronics can do so much.
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