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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.
ThinkVision displays are high-end computer monitors manufactured, designed and developed by IBM and Lenovo.. ThinkVision products are built using the design language of other Think devices such as the ThinkPad line of notebook computers and the ThinkCentre or ThinkStation lines of desktops.
If the frequency of the pulse-width modulation is too low or the user is very sensitive to flicker, this may cause discomfort and eye-strain, similar to the flicker of CRT displays. [27] [28] This can be tested by a user simply by waving a hand or object in front of the screen. If the object appears to have sharply defined edges as it moves ...
Raster-scan CRTs by their nature must refresh the screen since their phosphors will fade and the image will disappear quickly unless refreshed regularly. In a CRT, the vertical scan rate is the number of times per second that the electron beam returns to the upper left corner of the screen to begin drawing a new frame. [3]
The ThinkPad L series is a line of notebook computers from Lenovo as part of the ThinkPad family. As opposed to the ThinkPad T and X series, the L series has an added focus on economy and value; [1] they are the entry-level range for enterprise use, [2] and are also used by students. [3]
An LCD screen used as a notification panel for travellers. Each pixel of an LCD typically consists of a layer of molecules aligned between two transparent electrodes, often made of indium tin oxide (ITO), and two polarizing filters (parallel and perpendicular polarizers), the axes of transmission of which are (in most of the cases) perpendicular to each other.
In fact, early generations of computer displays were frequently related to eye strains and headache due to flickering, jitter and radiation. [2] [3] [4] In 1986, TCO published a basic list of requirements and test protocols to verify if a display was fit for continuous daily use as a help for employers to choose the right hardware for work ...
Both laptops include TPM 2.0 security chips, fingerprint readers, webcam shutters similar to those on ThinkPads, and dedicated buttons for Skype. [1] They support 8th Generation Intel Core processors, AMD Radeon 540X graphics, M.2 SSD storage, USB-C Docks, and run Windows 10 Pro. The ThinkBook 13s has a 13-inch screen and the 14s has a 14-inch ...