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What's your main thinking rock? (self.asklemmy)

submitted 3 months ago by cheese_greater to c/asklemmy

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[–] [email protected] 24 points 3 months ago (1 children)

Wafer thin silicon crystals arranged in highly specific structures. Add some gold and other metals, and the resulting conglomerate can do the thinking for me.

[–] cheese_greater 3 points 3 months ago* (last edited 3 months ago) (1 children)

This is the ~~only~~ most correct one haha

What's the green stuff the circuit board's made of?

[–] [email protected] 8 points 3 months ago (1 children)

Today it can be just dye, but solder masks used to be naturally green due to the nature of how these boards were made.

[–] cheese_greater 2 points 3 months ago (1 children)

But what is it, aluminum?

[–] [email protected] 7 points 3 months ago (1 children)

The PCB as a whole? Usually fiberglass or some other substrate to which sheets of copper are fastened. Then wherever you don't want a copper trace is removed by acid. Then the board is covered by something that acts as a protective layer to prevent oxidation.

[–] valkyre09 3 points 3 months ago

Here’s a video detailing the process for those interested 😀

https://youtu.be/YJr-kHy6STg?si=CugU2ezd6KZI5wDA