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Burn-in on a monitor, when severe as in this "please wait" message, is visible even when the monitor is switched off. Screen burn-in, image burn-in, ghost image, or shadow image, is a permanent discoloration of areas on an electronic visual display such as a cathode-ray tube (CRT) in an older computer monitor or television set. It is caused by ...
The flicker of a CRT monitor can cause various symptoms in those sensitive to it such as eye strain, headaches [9] in migraine sufferers, and seizures in epileptics. [10]As the flicker is most clearly seen at the edge of our vision there is no obvious risk in using a CRT, but prolonged use can cause a sort of retinal shock where the flickering is seen even when looking away from the monitor.
LCD monitor sales began exceeding those of CRTs in 2003–2004 [84] [85] [86] and LCD TV sales started exceeding those of CRTs in some markets in 2005. [87] Samsung SDI stopped CRT production in 2012. [88] Despite being a mainstay of display technology for decades, CRT-based computer monitors and TVs are now obsolete.
These monitors ran at higher scanning frequencies, typically allowing a 75 to 90 Hz field rate (i.e. 37.5 to 45 Hz frame rate), and tended to use longer-persistence phosphors in their CRTs, all of which was intended to alleviate flicker and shimmer problems. Such monitors proved generally unpopular, outside of specialist ultra-high-resolution ...
60 fps typically, some gaming monitors can do up to 540 fps; internally, display refreshed at up to 540 fps [23] [24] 60 fps typically, some can do 120 fps; internally, display refreshed at e.g. 480 or 600 fps [25] 60 fps typically. Up to 480 fps. [26] Flicker: Perceptible on lower refresh rates (60 fps and below) [27]
However, this does not apply to LCD monitors. The closest equivalent to a refresh rate on an LCD monitor is its frame rate, which is often locked at 60 fps. But this is rarely a problem, because the only part of an LCD monitor that could produce CRT-like flicker—its backlight—typically operates at around a minimum of 200 Hz.
Instead, performing the old trick on the new hardware led to strange behavior by the new video chip, which could cause signal contention and possibly damage the PET's integrated CRT monitor. [4] This is because the exact pin targeted by the POKE command used to control display timing, but in the upgraded video chip, that pin controlled the ...
Modern CRT monitors fix this problem through the introduction of protection circuitry. When the display mode is changed, the monitor attempts to obtain a signal lock on the new refresh frequency. If the monitor is unable to obtain a signal lock, or if the signal is outside the range of its design limitations, the monitor will ignore the ...