Search results
Results from the WOW.Com Content Network
A projector that is set to a lower maximum brightness will generally last longer. [5] No bulbs to replace after only a couple thousand hours (as with xenon-backlit DLP and LCD); however, CRT projectors can accumulate burn-in if set to a high contrast value and/or displaying static content over time
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.
CCFL backlights are used on larger displays such as computer monitors, and are typically white in color; these also require the use of an inverter and diffuser. Incandescent backlighting was used by early LCD panels to achieve high brightness, [8] [9] but the limited life and excess heat produced by incandescent bulbs were severe limitations ...
The OLPC XO (formerly known as $100 Laptop, [2] Children's Machine, [3] 2B1 [4]) is a low cost laptop computer intended to be distributed to children in developing countries around the world, [5] to provide them with access to knowledge, and opportunities to "explore, experiment and express themselves" (constructionist learning). [6]
For a CRT, the gamma that relates brightness to voltage is usually in the range 2.35 to 2.55; video look-up tables in computers usually adjust the system gamma to the range 1.8 to 2.2, [1] which is in the region that makes a uniform encoding difference give approximately uniform perceptual brightness difference, as illustrated in the diagram at ...
There's even an extra TF card slot, just in case you need an extra 256GB of storage. ... The laptop came with 12 GB of RAM—more than adequate to run Microsoft Office Word, Excel and Powerpoint ...
“The good news is that my biological age is 12 years lower than my chronological age. The worrying news: I’m seriously low in vitamin D and high in many lipoproteins, which impact heart health.”
The increased size, lower weight, falling prices, and often lower electrical power consumption of LCDs made them competitive with plasma television sets. In 2006, LCD prices started to fall rapidly and their screen sizes increased, although plasma televisions maintained a slight edge in picture quality and a price advantage for sets at the ...