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Beginning of Paper
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Semiconductors : The Silicon Chip
Silicon is the raw material most often used in integrated circuit (IC)
fabrication. It is the second most abundant substance on the earth. It is
extracted from rocks and common beach sand and put through an exhaustive
purification process. In this form, silicon is the pu ....
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Middle of Paper
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.... devices at
higher temperatures than germanium.
Now I will give you some brief history of the evolution of electronics
which will help you understand more about semiconductors and the silicon
chip. In the early 1900's before integrated circuits and silicon chips
were invented, computers and radios were made with vacuum tubes. The
vacuum tube was invented in 1906 by Dr.Lee DeForest. Throughout the first
half of the 20th century, vacuum tubes were used to conduct, modulate and
amplify electrical signals. They made possible a variety of new products
including the ....
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