Why chemistry is important for electronic and communication?
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Answer:
Silicon lies at the heart of today's ubiquitous computing technologies, but that was not always so. Vacuum tubes were once the cutting edge of electronics, essential components in early radios, televisions and even computers.
Scientists had been interested in the peculiar characteristics of silicon and other semiconductors since the late 19th century. These materials were neither highly conductive metals nor nonconducting insulators, but somewhere in between - hence the name. Unlike metals, their resistivity did not increase with temperature. However, they did respond to exposure to light, even producing a current. They also had the peculiar ability to restrict an electric current to passing in one direction, transforming (or rectifying) AC current into DC current.