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ученика 9-Б класса

Mechanical televisions were commercially sold from 1928 to 1934 in the united kingdom, united states, and soviet union. the first commercially made electronic televisions with cathode ray tubes were manufactured by telefunken in germany in 1934, followed by other makers in france (1936), britain (1936), and america (1938). by the late 1960s and early 1970s, color television had come into wide use. in britain, bbc1, bbc2 and itv were regularly broadcasting in colour by 1969. by the later 2000s, crt display technology was largely supplanted in the home electronics market by flat panel displays such as lcd and plasma. an outdoor television set designed for outdoor use is usually found in the outdoor sections of bars, sports fields, or other community facilities. most outdoor televisions use high-definition television technology.