TV or TV is a telecommunication medium used to transmit motion pictures 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, television program (“TV programs”) or television broadcast. Television is a mass media for entertainment, education, news, politics, gossip and advertising.
Television became available in early experimental forms at the end of 1920, but it would still be several years before the new technology to be marketed to consumers. After the Second World War, a better form of black and white television became popular in the United States and Britain, and televisions became common in households, businesses and institutions. In the 1950s, television was the main means of influencing public opinion.  In the mid-1960s, color broadcasting was introduced in the United States and many other developed countries. The availability of different types of storage media, such as Betamax, VHS, local hard disks, DVDs, flash drives, high definition Blu-ray Disc players and digital video recorders, allow visions of pre-recorded material – such as movies – at home In his own program. For many reasons, conservation and video programming television is now in the cloud. By the end of the first decade of the 2000s, digital TV broadcasts have increased considerably in popularity. Another development was the standard television definition motion (SDTV) (576i, 576 lines interlaced with resolution and 480i) to high definition television (HDTV), which provides a substantially higher resolution. HDTV can be transmitted in various formats: 1080p, 1080i and 720p. By 2010, with the invention of smart television, Internet TV has increased the availability of television shows and movies on the Internet through streaming video services such as Netflix, Amazon Video, iPlayer, Hulu, Roku and Chromecast.
In 2013, 79% of families across the world had a TV set. The replacement of high-voltage CRT screens with alternative energy efficient technologies such as plasma screens, LCD (illuminated with fluorescent and support LEDs), and OLED displays were a hardware revolution that began with Computer monitors at the end of 1990. most of the televisions sold in 2000 were flat-screen, especially LEDs. The major manufacturers announced the discontinuation of CRT LCD, DLP, plasma and even fluorescent light in mid-2010. In the near future, LEDs will be gradually replaced by OLED. In addition, major manufacturers have announced that they produce more and more intelligent TVs in mid 2010 smart TVs with integrated Internet and Web 2.0 features have become the dominant television form at the end of 2010.
TV signals were initially distributed only as terrestrial television using high-power RF transmitters to transmit the signal to single TV receivers. Alternatively, television signals are distributed via coaxial or fiber optic cable, satellite systems, and from 2000 through the Internet. Since the early 2000s, these were transmitted as analog signals, but a transition to digital television will be completed around the world by the end of 2010. A standard television includes more internal electronic circuits, including a tuner for receiving and decoding transmission Of the signal. A display device that does not have a tuner is properly called a video monitor instead of a TV.