Television (TV) is a widely used telecommunication Telecommunication is the transmission of signals over a distance for the purpose of communication. In earlier times, this may have involved the use of smoke signals, drums, semaphore, flags or heliograph. In modern times, telecommunication typically involves the use of electronic devices such as telephones, television, radio or computers. Early medium Mass media denotes a section of the media specifically designed to reach a very large audience such as the population of a nation state. The term was coined in the 1920s with the advent of nationwide radio networks, mass-circulation newspapers and magazines. However, some forms of mass media such as books and manuscripts had already been in use for transmitting and receiving moving images An image is an artifact, for example a two-dimensional picture, that has a similar appearance to some subject—usually a physical object or a person, either monochromatic Monochrome is a term generally used to describe painting, drawing, design, or photograph in one color or shades of one color. Monochromatic light is light of a single wavelength, though in practice it can refer to light of a narrow wavelength range. A monochromatic object or image is one whose range of colors consists of shades of a single color ("black and white") or color Color or colour is the visual perceptual property corresponding in humans to the categories called red, yellow, blue and others. Color derives from the spectrum of light (distribution of light energy versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of, usually accompanied by sound Sound is a travelling wave which is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations. "Television" may also refer specifically to a television set In television's electromechanical era, commercially made televisions were sold from 1928 to 1934 in the United Kingdom, United States, and Russia. The earliest commercially made televisions sold by Baird in the UK in 1928 were radios with the addition of a television device consisting of a neon tube behind a mechanically spinning disk with a, television programming A television program , television programme (in most Commonwealth countries and Ireland), or television show (USA/UK) is a segment of content broadcast on television. It may be a one-off broadcast or part of a periodically recurring television series or television transmission In telecommunications, transmission is the process of sending, propagating and receiving an analogue or digital information signal over a physical point-to-point or point-to-multipoint transmission medium, either wired or wireless. Transmission technologies and schemes typically refer to physical layer protocol duties such as modulation,. The word is derived from mixed Latin Latin is an Italic language originally spoken in Latium and Ancient Rome. With the Roman conquest, Latin was spread to countries around the Mediterranean, including a large part of Europe. Romance languages, such as Catalan, French, Italian, Portuguese, Romanian, and Spanish, are descended from Latin, while many others, especially European and Greek Greek , an independent branch of the Indo-European family of languages, is the language of the Greeks. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. In its ancient form, it is the language of classical ancient Greek literature and the New Testament of roots, meaning "far sight": Greek tele (τῆλε), far, and Latin visio, sight (from video, vis- to see, or to view in the first person).
Commercially available since the late 1930s The history of television is both complex and far-reaching, involving the work of many inventors and engineers in several countries over many decades. Initially, work proceeded along two different but overlapping lines of development: those designs employing both mechanical and electronic principles, and those employing only electronic principles, the television set has become a common communications receiver in homes, businesses and institutions, particularly as a source of entertainment Entertainment is typically passive - as in watching opera or a movie. Activities which involve participating in games or sports are more often considered to be recreation. Activities such as personal reading or practising a musical instruments are considered as hobbies and news. Since the 1970s the availability of video cassettes Videotape is a means of recording images and sound on to magnetic tape as opposed to movie film. Videotapes are also used for storing scientific or medical data, such as the data produced by an electrocardiogram. In most cases, a helical scan video head rotates against the moving tape to record the data in two dimensions, because video signals, laserdiscs The Laserdisc is an obsolete home video disc format, and was the first commercial optical disc storage medium. Initially marketed as Discovision in 1978, the technology was licensed and sold as Reflective Optical Videodisc, Laser Videodisc, Laservision, Disco-Vision, DiscoVision, and MCA DiscoVision until Pioneer Electronics purchased the majority, DVDs DVD-Video is a consumer video format used to store digital video on DVD discs, and is currently the dominant consumer video format in Canada, Europe and Australia. Discs using the DVD-Video specification require a DVD drive and a MPEG-2 decoder . Commercial DVD movies are encoded using a combination of MPEG-2 compressed video and audio of varying and now Blu-ray Discs Blu-ray Disc is an optical disc storage medium designed to supersede the standard DVD format, have resulted in the television set frequently being used for viewing recorded as well as broadcast material.
Although other forms such as closed-circuit television It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point wireless links. CCTV is often used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores are in use, the most common usage of the medium is for broadcast television Terrestrial television is a mode of television broadcasting which does not involve satellite transmission or via underground cables—typically through the atmosphere from a transmitting antenna. . The term is more common in Europe, while in the United States it is referred to as broadcast television, which was modeled on the existing radio broadcasting Radio broadcasting is an audio broadcasting service, broadcast through the air as radio waves (a form of electromagnetic radiation) from a transmitter to a receiving antenna. Stations can be linked in radio networks to broadcast common programming, either in syndication or simulcast or both. Audio broadcasting also can be done via cable FM, local systems developed in the 1920s, and uses high-powered radio-frequency Radio frequency radiation is a subset of electromagnetic radiation with a wavelength of 100km to 1mm, which is a frequency of 3 KHz to 300 GHz, respectively. This range of electromagnetic radiation constitutes the radio spectrum and corresponds to the frequency of alternating current electrical signals used to produce and detect radio waves. RF transmitters to broadcast The original term "broadcast" referred to the literal 'sowing of seeds' on farms, by scattering them over a wide field. It was first adopted by early radio engineers from the Midwestern United States to refer to the analogous dissemination of radio signals. Broadcasting forms a very large segment of the mass media. Broadcasting to a very the television signal to individual TV receivers.
Broadcast TV is typically disseminated via radio Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing some property of the radiated waves, such as transmissions on designated channels in the 54–890 megahertz The hertz is a unit of frequency. It is defined as the number of complete cycles per second. It is the basic unit of frequency in the International System of Units (SI), and is used worldwide in both general-purpose and scientific contexts. Hertz can be used to measure any periodic event; the most common uses for hertz are to describe radio and frequency band A band is a small section of the spectrum of radio communication frequencies, in which channels are usually used or set aside for the same purpose[1]. Signals are now often transmitted with stereo Stereophonic sound, commonly called stereo, is the reproduction of sound using two or more independent audio channels through a symmetrical configuration of loudspeakers in such a way as to create the impression of sound heard from various directions, as in natural hearing. It is often contrasted with monophonic, or "mono" sound, where and/or surround sound Surround sound encompases a range of techniques for enriching the sound reproduction quality of an audio source with audio channels reproduced via additional, discrete speakers. The three-dimensional sphere of human hearing can be virtually achieved with audio channels above and below the listener. To that end, the multichannel surround sound in many countries. Until the 2000s broadcast TV programs were generally recorded and transmitted as an analog Analog recording (Greek, ana is "according to" and logos "relationship") is a technique used to store signals of audio or video information for later playback signal, but in recent years public and commercial broadcasters have been progressively introducing digital television Digital television is the sending and receiving of moving images and sound by discrete (digital) signals, in contrast to the analog signals used by analog TV broadcasting technology.
A standard television set comprises multiple internal electronic circuits An electronic circuit is a closed path or paths formed by the interconnection of electronic components through which an electric current can flow, including those for receiving A tuner is a circuit module or free-standing equipment which detects electrical signals and converts them to a form suitable for further processing and decoding broadcast signals. A visual display device which lacks a tuner is properly called a monitor A video monitor also called a broadcast monitor, broadcast reference monitor or just reference monitor, is a device similar to a television, used to monitor the output of a video-generating device, such as a media playout server, IRD, video camera, VCR, or DVD player. It may or may not have audio monitoring capability. Unlike a television, a video, rather than a television. A television system may use different technical standards such as digital television Digital television is the sending and receiving of moving images and sound by discrete (digital) signals, in contrast to the analog signals used by analog TV (DTV) and high-definition television High-definition television is a digital television broadcasting system with higher resolution than traditional television systems (standard-definition TV, or SDTV). HDTV is digitally broadcast; the earliest implementations used analog broadcasting, but today digital television (DTV) signals are used, requiring less bandwidth due to digital video (HDTV). Television systems are also used for surveillance, industrial process control, and guiding of weapons, in places where direct observation is difficult or dangerous.
Amateur television (ham TV or ATV) is also used for experimentation, pleasure and public service events by amateur radio operators. Ham TV stations were on the air in many cities before commercial TV stations came on the air.[2]
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We ve shown you the child s side of Hannspree with its Disney inspired LCD models but here s something a little more sophisticated for the grownups The Hanns Starlight is a 15 inch LCD TV
Mima
Mon, 25 Jan 2010 12:09:10 GM
With all the media that is available to our kids today, the . television. is still their favourite. According to New York Daily News, the Kaiser Family Foundation has conducted a study on the amount of time that children use various media.
Q. I have a television that is not connected to a cable system. Can I connect a DVD player to this television set?
Asked by Sue R - Mon Mar 31 07:20:58 2008 - - 5 Answers - 0 Comments
A. Can you hook up the dvd player to the cable system and tv to the cable? If not,your tv should have some kind of connection to hook up a dvd player to it. If not,check radio shack or something for an adapter.
Answered by Lana - Mon Mar 31 07:25:38 2008
