Television (TV), sometimes abbreviated as television or television, is a telecommunication medium used to transmit moving images in black and white (black and white) or in color and in two or three dimensions and sound. The term may refer to a television set, a television program ("TV program") or the television broadcast medium. Television is a mass communication medium for advertising, entertainment, news and sports.
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In 2013, 79% of the world's families owned a television. The replacement of the first bulky high voltage screens with cathode ray tube (CRT) is visualized with compact, low energy consumption and flat screen technologies such as LCDs (both fluorescent - backlit and LED), OLED display and plasma display is It was a hardware revolution that started with computer monitors in the late 90s. Most of the televisions sold in the 2000s were flat screen, mainly LED. Major manufacturers have announced the discontinuation of CRT, DLP, plasma and even fluorescent backlit LCDs by mid 2010. In the near future, LEDs are expected to be gradually replaced by OLEDs. Moreover,
Television signals were initially distributed only as terrestrial televisions using high power radio frequency transmitters to transmit the signal to individual television receivers. Alternatively, the television signals are distributed via coaxial cable or optical fiber, satellite systems and, since the 2000s, via the Internet. Until the early 2000s, these were transmitted as analog signals, but a transition to digital television is expected to be completed worldwide by the end of 2010. A standard television set is composed of multiple internal electronic circuits, including a tuner for reception and decoding of transmission signals. A visual display device without a tuner is properly called a video monitor rather than a TV.