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Production Of Silicon Chips
Beginning of essay
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 othe ....
Middle of essay
....e it is rotated and pulled slowly upward. The seed grows into a three foot long, cylindrical, single crystal.
Silicon this pure is hard, dark grey in color and lusterous. The giant crystal of silicon is next ground into a perfect cylinder, which is sliced by a diamond-tipped saw into wafers 1 mm thick. Using particles one-tenth of a micrometer wide, the faces of these wafers are polished to give a smooth base onto which up to two hundred dentical chips can simultaneously be photo-etched.
The b.... |
| Number of words: 633 |
Approximate pages: 3 |
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