I have been in the business of working for companies that make computer chips for more than 25 years.
Making a chip is a combination of the old darkroom enlargers and painting a car. You take a flat piece of silicon, which is pure glass, put photo resist chemical on, shoot light through a negative. The reaction to the light makes the chemical react, you wash that off leaving a mask on the silicon, like masking a car. You then spray on a layer of molecules, like painting a car. This process is repeated until you have the appropriate layers of molecules on to make a computer chip. There can be several hundred chips on one wafer, the chips are then tested, and cut off to make individuals. The chips are graded, with the best ones being the faster chips, a lot like sorting gravel by size.
The new wafers are 18 inches in diameter and built with an accuracy of 15 nano meters, when I started they were 4 inches in diameter and 10 micro meters.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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