how Lcd televisions work?
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liquid crystal display. the screen has an encased fluid that enhances the picture your tv projects just as in hdtv
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Depends on the type of monitor you have - lets assume the old tube type monitor.  In that case, the entire monitor inside the shell is a big vaccuum tube with something called an electron gun in the back.  There is phosporous compounds on the back of the glass.   The electron gun fires a particle beam at the back of the glass starting at the top left and then move to the right.  WHen it gets to the right side, it goes back to the left and down a line (I won't got into interlacing - you can look that up).  This continues until the beam gets to the lower right corner and then it shuts off and goes back to the top left and starts all over.  \n\nSo, there is a constant beam going across your screen in that typewriter fashion - it happens many times per second (depends on the monitor - this is your refresh rate).  What happens when the beam hits the glass - well, the phosphorous glows.  For each little spot on the screen, there are three colors - red, blue, and green - that can be lit up by the particle beam.  The combination of colors gives you the screen.  The more spots you have that you can light up as a rgb unit, the better the resolution on your screen.\n\nHow is this electron gun moved?  Well, it doen't really move.  The  direction of the beam is altred by electromagnets aroudn the yolk of the glass tube (the yoke is the smaller part near the back).  power is applied to the magnets to control or bend the electorn beam.  These control magnets are controlled by the inputs from the video card from the main pc.\n\nSo, if you opened up an old tube TV or tube based (analog) monitor, you will find a big vaccuum tube wiht wires running around it and a circuit board or two.\n\nLCD and plasma work a bit differently.
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It depends on what you class as a television. There were monitors around before the camera such as wave form and vectorscope monitors so that engineers could see visual images of electronic activity within an electronic system such as radio. They used these when researching how to capture moving images i.e. the TV camera, we still use them for monitoring the technical quality of the pictures we produce. But in terms of what the general public knows as a TV monitor it was developed concurrently with the camera. The picture was captured on a tube converted into signal sent down a cable and then reproduced on the tube in the TV.\nI've just had this debate with one of our technical directors our news director and some other staff and the majority say the monitor or TV in it's crudest form came before the camera.\nHope this helps.
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How light guns work\n\nThe "light gun" is so named because it uses light as its method of detecting where on screen you are targeting. The name leads one to believe that the gun itself emits a beam of light, but in fact most light guns actually receive light through a photoreceptor diode in the gun barrel. [Re].\n\nThere are two versions of this technique that are commonly used, but the concept is the same: when the trigger of the gun is pulled, the screen is blanked out to black, and the diode begins reception. All or part of the screen is painted white in a way that allows the computer to judge where the gun is pointing, based on when the diode detects light. The user of the light gun notices little or nothing, because the period in which the screen is blank is usually only a fraction of a second.\n\nSequential targets\n\nThe first detection method, used by the Zapper, involves drawing each target sequentially in white light after the screen blacks out. The computer knows that if the diode detects light as it is drawing a square (or after the screen refreshes), that is the target the gun is pointed at. Essentially, the diode tells the computer whether or not you hit something, and for n objects, the sequence of the drawing of the targets tell the computer which target you hit after 1 + ceil(log2(n)) refreshes (one refresh to determine if any target at all was hit and ceil(log2(n)) to do a binary search for the object that was hit).\n\nAn interesting side effect of this is that on poorly designed games, often a player can point the gun at a light bulb, pull the trigger and hit the first target every time. Better games account for this by detecting if all targets appear to match - that would mean cheating.\n\nCathode ray timing\n\nThe second method, used by the Super Nintendo Entertainment System's Super Scope and computer light pens is more elaborate but more accurate.\n\nThe trick to this method lies in the nature of the cathode ray tube inside the video monitor. (CRTs were the only affordable TV monitors in the late 1980s and early 1990s, when this method was popularized.) The screen is drawn by a scanning electron beam that travels across the screen starting at the top until it hits the end, and then moves down to update the next line. This is done repeatedly until the entire screen is drawn, and appears instantaneous to the human eye as it is done very quickly.\n\nWhen the player pulls the trigger, the computer (often assisted by the display circuitry) times how long it takes the electron beam to excite the phosphor at the location the gun is pointed at. It then calculates the targeted position based on the monitor's horizontal refresh rate (the fixed amount of time it takes the beam to get from the left to right side of the screen). Either the computer provides a time base for the horizontal refresh rate through the controller's connector (as in the Super Scope), or the gun reads the composite video signal through a T-connector on the A/V cable (as in the GunCon 2). Once the computer knows where the gun is pointed, it can tell through collision detection if it coincides with the target or not.\n\nMany guns of this type (including the Super Scope) ignore red light, as red phosphors have a much slower rate of decay than green or blue phosphors. So some (but not all) games brighten the entire screen for a frame in order to get a more reliable fix on the position.\n\nDisplay timing is useless with plasma, LCD, and DLP, which refresh all pixels at the same time.\n\nCombining the methods\n\nSome light guns designed for sequential targeting are not timed precisely enough to get an (X, Y) reading against the video signal, but they can use a combination of the two methods. First the screen is brightened and the response time is measured as in cathode ray timing, but the computer measures only which scanline was hit and not which horizontal pixel was hit. This does not need nearly as fast a timer that pure ca
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The screen is coated with phosphorous and the tube itself is evacuated to form a vacuum.\n\nAn electron beam is produced by a heating element in one end of the tube.\n\nMagnets can focus the electron beam or make the beam spin.\n\nThere are vertical and horizontal plate capacitors in the tube that deflect the electron beam up/down or sideways.\n\nElectrical signals from a TV or computer control the focusing magnet and the charges on the capacitor to produce a picture on your screen.\n\nThis is pretty much a simplistic description of how they work.
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Conserves energy, supports very high resolutions, portable, sexy.\n\nNote: Viewing angle is still a trouble..... you don't have that problem in CRT monitors. The picture becomes negetive & colour changes when we increase the viewing angle of a TFT screen.
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Use a 7106 or 7107 IC.  They provide analog to digital conversion and drivers for a liquid crystal display.  The source in "references" provides kits to make a panel mounted ohm or volt meter using these ICs.  \n\n"Google" these ICs and you will find more.
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u gotta change your monitor settings and make your tv the primary monitor, to do this \n\ngo into display properties, \ngo to settings and you should have two monitors, \none that is big and highlighted and the other small and not highlighted, \nright on the 2nd monitor the one that isnt highlighted and click on attached and then click on primary, \nyour screen may flicker to the new setting or you may need to click on apply or ok, \n\nyou tv should now show your computer screen\nhope that works
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A CRT(cathode ray tube) display screen uses a "electron gun" to fire electrons at the phosphor screen, thus creating an image. The advantages to having a CRT screen over a LCD(liquid crystal display) screen is that it's easier to install, since almost all computers and its motherboards have the port integrated.\nThe disadvantages of a CRT screen, is that it's bulky(due to the size of the "electron gun"), and it produces radiation, which is received by your eyes when viewing the screen. Prolonged exposure to the radiation can cause discomfort(in terms of headaches and/or seizures).
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Power = E x I, where "E" is the voltage accelerating the electrons toward the screen and "I" is the electron current hitting the screen.\n\nIf the accelerating voltage is typically regulated at 20,000 volts or so, and a typical electron beam current might be 1 to 10 milliamperes (0.001 to 0.010 amperes), then the power would be in the range of 20 to 200 watts. Except for a very small amount that is converted to visible light, this power appears as heat dissipated in the phosphor face plate.\n\nBear in mind that the image on the picture tube screen is formed not only by scanning (a raster) but also by modulating the current of the electrons impacting the screen. In general, more current means more light until the phosphor saturates and cannot produce any more light.\n\nA lot of the power in the electron beam of a color television is wasted because some of the electrons never reach the phosphorescent screen. Instead they are intercepted by a shadow mask or grill that is only there to make sure each of three electron guns illuminates its own color and not its two adjacent neighboring colors.
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the satellites help make tv and cell phones and other electronics work
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I would imagine you are speaking of an LCD (Liquid Crystal Display) flatscreen monitor. If so, they are very good. A couple of things though. When you are looking at buying an LCD monitor, look at contrast ratios (someties shown as e.g. 500:1). This is the difference the human eye sees the blacks to the whites. A very important trait. The higher the ratio, the better. Also, look at response times. 12ms & below are outstanding, but you will pay more for these. This is the rate that the monitor displays the information sent from the computer. This is more important with 3D gaming, but it is also nice for anyone who wants to get the full effect of an LCD screen. Viewsonic has some AWESOME monitors. http://www.viewsonic.com/
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Is it a CRT (huge, big box monitor)?\nIf it is, it seems that its going to die soon. The Flyback transformer may neet replacement. Go get an LCD already :D
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This is how films are recorded, they all are made this way and then modified to fit youir screen, but more commonly you will see less and less modification and anything less than high a def TV will be obsolete.  Sooner or later even all cable will be broadcasted this way and without a high def TV you will see the annoying black bars accross the screen. I hope this anwers your question
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Liquid Crystal Displays (LCDs) are categorized as non- emissive display devices, in that respect, they do not produce any form of light like a Cathode Ray Tube (CRT). LCDs either pass or block light that is reflected from an external light source or provided by a back/side lighting system. There are two modes of operation for LCDs during the absence of an electric field (applied Power); a mode describes the transmittance state of the liquid crystal elements. Normal White mode: the display is white or clear and allows light to pass through and Normal Black Mode: the display is dark and all light is diffused. Virtually all displays in production for PC/Workstation use are normal white mode to optimize contrast and speed.\nThe color plasma display panel (PDP) is one of the leading types of high definition television (HDTV) displays. It's small depth, the ability to provide very high-resolution, and it's scalability to very large sizes make this technology very attracktive for the TV set market.\nAlmost all the PDP companies have now adopted the AC PDP. The plasma in each cell of an an AC PDP is generated by dielectric barrier discharges (DBDs) operating in a glow regime in a rare gas mixture (typically 500 Torr).
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I am assuming that:\nYou want to use your TV as your only monitor.\nYou use Windows XP.\n\nFirst, I would like to warn you that a computer screen image on a TV is not clear and often hard to see. This is caused by the fact that non-HD TVs have considerably less screen resolution than most computer monitors. However, if you only want to watch movies, the picture quality should be the same.\n\nThe red, white, and yellow connections are called composite. If both your computer and TV have them I see no reason why you cannot use a cable to connect them (as long as the connections are going out on your computer and in on your TV). You probably should check your computer’s and/or video card’s owner’s manual to be sure that the connections on your computer are out.\n\nOnce you are sure that you have the correct connections and you have the cables you need; turn off your computer, unplug your monitor (if you have one plugged in), and plug the cables in. Then turn your computer on. I think this will accomplish what you want. \n\nIf you have any questions, feel free to contact me using the link on my Q&A page.\n\nIf this answer doesn’t help, please provide more information such as:\nDo you want to use your TV as your only monitor, have your TV and monitor display identical images, or use a type of dual view? \nWhat OS are you using?\nWhat video card do you use?\nAnd anything else that may be relevant.
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Only on pixel of a CRT is lit up at a time, so unless you take a well-timed exposure, all you'll get is a single dot or part of the image.\nYou can easily take a picture of an LCD screen, as all the cells are lit at any given time. \nFor more information see the source.