These include the remote control, computer monitors, video recorders VCRs , laser disc players, and a host of devices that may require compatible design and components.
Specialized televisions are produced for some industries, including television studios and mobile broadcast facilities, hospitals, and for surveillance applications for public safety and use in inaccessible or dangerous locations.
Wastes may include metals, plastics, glass, and chemicals. Metals, plastics, and glass are isolated and recycled unless they have been specially treated or coated. Chemicals are carefully monitored and controlled; often, they can be purified and recycled, so disposal of hazardous wastes can be minimized. Hazardous waste plans are in effect in all stages of manufacture, both to minimize quantities of waste and to protect workers.
The future of television is now. This system produces a movie-quality picture by using a 1,line picture on a "letter-box" format screen with a 16 to nine width to height ratio.
High-quality, flat screens suitable for HDTV are being perfected using synthetic diamond film to emit electrons in the first application of synthetic diamonds in electronic components.
Other developments in the receiver include gold-plated jacks, an internal polarity switch on large screens that compensates for the effect of Earth's magnetic field on image reception, accessories to eliminate ghosts on the screen, the Invar shadow mask to improve brightness, and audio amplifiers. Liquid crystal display LCD technology is also advancing rapidly as an alternative to the cumbersome television screen. Assorted computer chips add functions like channel labeling, time and data displays, swap and freeze motions, parental channel control, touch screens, and a range of channel-surfing options.
Digital television of the future will allow the viewer to manipulate the angle of the camera, communicate with the sports commentator, and splice and edit movies on screen. Two-way TV will also be possible. Current screens may be used thanks to converter boxes that change the analog signal that presently energizes the phosphors on the back of your television screen to digital signals that are subject to less distortion—and are the language of computers.
Computer technology will then allow a world of manipulation of the data as well as broadcast of six times as much data. The future of television manufacture may be anywhere but in the United States. Thirty percent of all televisions manufactured by Japanese companies are made in factories in Mexico. The factories themselves will soon be producing hybrids in which the television, computer monitor, and telephone are a single unit, although this development will take further improvements in compatibility between machines that speak analog versus digital language and the creation of PC-to-video bridges.
Proof of the possibility of this integrated future exists now in Internet access that is now available through television cable converters and the living room TV screen. Barker, Dennis P. Braithwaite, Lancelot. Doherty, Brian. Fisher, David E. Goldberg, Ron. Heald, Tom. Levine, Martin.
Lewyn, Mark. Miller, Michael J. Toggle navigation. Made How Volume 3 Television Television. Diagram of a television receiver. Other articles you might like:. Also read article about Television from Wikipedia. User Contributions: 1. Bill Wren. The block diagram for a televison receiver shows the antenna feeding into the audio channel. Of course, it should be connected to the tuner. Comment about this article, ask questions, or add new information about this topic: Name:.
E-mail: Show my email publicly. Human Verification:. Public Comment: characters. Joseph R. McCarthy soon began to inveigh against what he claimed was Communist infiltration of the government. Broadcasting, too, felt the impact of this growing national witch-hunt. Political beliefs suddenly became grounds for getting fired.
Most of the producers, writers, and actors who were accused of having had left-wing leanings found themselves blacklisted, unable to get work.
CBS even instituted a loyalty oath for its employees. Among the few individuals in television well positioned enough and brave enough to take a stand against McCarthyism was the distinguished former radio reporter Edward R. In partnership with the news producer Fred Friendly, Murrow began See It Now , a television documentary series, in On Mar.
Of McCarthy, Murrow observed, "His mistake has been to confuse dissent with disloyalty. Offered free time by CBS, McCarthy replied on April 6, calling Murrow "the leader and the cleverest of the jackal pack which is always found at the throat of anyone who dares to expose Communist traitors.
In the U. Between and , television programming began to take some steps away from radio formats. NBC television president Sylvester Weaver devised the "spectacular," a notable example of which was Peter Pan , starring Mary Martin, which attracted 60 million viewers. Weaver also developed the magazine-format programs Today , which made its debut in with Dave Garroway as host until , and The Tonight Show , which began in hosted by Steve Allen until The programming that dominated the two major networks in the mids borrowed heavily from another medium: theater.
Steel Hour This is often looked back on as the "Golden Age" of television. However, by only one of these series was still on the air. Viewers apparently preferred dramas or comedies that, while perhaps less literary, at least had the virtue of sustaining a familiar set of characters week after week. I Love Lucy , the hugely successful situation comedy starring Lucille Ball and Desi Arnaz, had been recorded on film since it debuted in lasting until It had many imitators.
The Honeymooners , starring Jackie Gleason, was first broadcast, also via film, in lasting until with the original cast. The first videotape recorder was invented by Ampex in see video; video recording; video technology. Another format introduced in the mids was the big-money quiz show.
Cowan, by that time president of CBS television, was forced to resign from the network amid revelations of widespread fixing of game shows see Van Doren, Charles.
Television news first covered the presidential nominating conventions of the two major parties, events then still at the heart of America politics, in The term "anchorman" was used, probably for the first time, to describe Walter Cronkite's central role in CBS's convention coverage that year.
In succeeding decades these conventions would become so concerned with looking good on television that they would lose their spontaneity and eventually their news value.
The networks had begun producing their own news film. Increasingly, they began to compete with newspapers as the country's primary source of news see journalism. The election of a young and vital president in , John F. Kennedy, seemed to provide evidence of how profoundly television would change politics.
Commentators pointed to the first televised debate that fall between Kennedy, the Democratic candidate for president, and Vice-President Richard M. Nixon, the Republican's nominee. A survey of those who listened to the debate on radio indicated that Nixon had won; however, those who watched on television, and were able to contrast Nixon's poor posture and poorly shaven face with Kennedy's poise and grace, were more likely to think Kennedy had won the debate.
Television's coverage of the assassination of President Kennedy on Nov. Most Americans joined in watching coverage of the shocking and tragic events, not as crowds in the streets, but from their own living rooms.
By the end of the decade Cronkite had become not just a highly respected journalist but, according to public opinion surveys, "the most trusted man in America. While the overwhelming majority of television news reports on the Vietnam War were supportive of U.
Many believed it contributed to growing public dissatisfaction with the war. And some of the anger of those defending U. Marines on a "search and destroy" mission to a complex of hamlets called Cam Ne. The Marines faced no enemy resistance, yet they held cigarette lighters to the thatched roofs and proceeded to "waste" Cam Ne. After much debate, Safer's filmed report on the incident was shown on CBS. Johnson, accusing the network of a lack of patriotism.
During the Tet offensive in , Cronkite went to Vietnam to report a documentary on the state of the war. That documentary, broadcast on Feb. President Johnson was watching Cronkite's report. In color broadcasting began on prime-time television. The sound portion of the television is usually manufactured as one part. The necessary electronics are connected together and attached to a pair of speakers that fit inside of the casing.
The audio system is usually specific to the brand and made by the manufacturer. Finally, the electronic components are attached to each other. These parts are usually a combination of circuits, chips, and wiring that is custom made by the company.
These parts usually differ based on the company and determine the different levels of quality in the television. After all of the parts are created, they are assembled inside of the casing, tested for quality control, and packaged for shipping.
First, a large sheet of glass is cut to the size of the television's screen. This sheet is usually made up from a much large sheet that is cut into several different pieces. After the glass is cut, two panels are placed together. In between the panels, a special gas is added that reacts to electricity.
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