Inside every modern computer or other data-processing wonder is a microprocessor bearing millions of transistors sculpted from silicon y chemicals and light. Silicon, the second most abundant element on Earth, is used extensively in transistors, integrated circuits, photoelectric devices, and other electronic devices. A pure crystal of silicon does not conduct electricity unless traces of other substances are diffused or doped onto it. Therefore silicon must be manufactured in a specific way in order for it to yield electrons for a current. All manufacturing of silicon takes place in a "clean room" which is an area where each one foot cube of air m....

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