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A transistor radio is a small portable radio receiver that uses transistor-based circuitry. Following their development in 1954, made possible by the invention of the transistor in 1947, they became the most popular electronic communication device in history, with billions manufactured during the 1960s and 1970s.
what were changes to society because of the radio. interest in politics and sports increased, improved communication (info reached a larger audience), and advertisements (which lead to rising sales) what were the new labor saving devices in the 1920's through the 1930's.