Cyllya1 is correct, this type of suit is like a hazmat suite, only opposite in function. It is designed to protect the room from my personal contaminants (hair, skin cells, etc..)
Wafer fabrication is very exact, I can only imagine how many datapoints this process would monitor. Here's what I understand so far:
• An extremely thin slice is taken from a cylinder of pure Sillicon
• This slice will get doped with chemical impurities (Si does not actually conduct electricity, using dopants allows Si to behave like a lightswitch)
• This slice will also get heated to create a chemical reaction which will uniformly distribute these dopants
• Lasers are used to carve out conductive pathways (usually filled with Copper)
If you step back from the mind-boggling chemistry it takes to make Si and its P / N dopants useful; the payoff is having the simple, predicable behavior of logic-gates. A bit in computer memory is made up of 4 NAND gates. This and a combination of other logic gates are what makes the computer function.
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I'm a math evangelist, I believe in theorems and ignore the proofs.