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Image persistence, or image retention, is a phenomenon in LCD and plasma displays where unwanted visual information is shown which corresponds to a previous state of the display. It is the flat-panel equivalent of screen burn-in. Unlike screen burn-in, the effects are usually temporary and often not visible without close inspection.
A computer screen showing a background wallpaper photo of the Palace of Versailles A wallpaper from fractal. A wallpaper or background (also known as a desktop background, desktop picture or desktop image on computers) is a digital image (photo, drawing etc.) used as a decorative background of a graphical user interface on the screen of a computer, smartphone or other electronic device.
Mobile phones have a fixed identification code, the IMEI. A telephone reported stolen can have its IMEI blocked by networks , preventing them from being used as mobile devices. [ 11 ] iOS offers a similar "Activation Lock" feature via the " Find My iPhone " security software, where a device can be remotely prevented from operating (even after ...
A screensaver (or screen saver) is a computer program that blanks the display screen or fills it with moving images or patterns when the computer has been idle for a designated time. The original purpose of screensavers was to prevent phosphor burn-in on CRT or plasma computer monitors (hence the name). [ 1 ]
A typical video tearing artifact (simulated image) Screen tearing [1] is a visual artifact in video display where a display device shows information from multiple frames in a single screen draw. [2] The artifact occurs when the video feed to the device is not synchronized with the display's refresh rate.
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Broken pages – On many devices, a single page as viewed on a desktop is broken into segments, each treated as a separate page. This further slows navigation. Compressed pages – Many pages, in their conversion to mobile format, are squeezed into an order different from how they would customarily be viewed on a desktop computer.
In July 2004, computer hobbyists released a proof-of-concept virus Cabir, that infects mobile phones running the Symbian operating system, spreading via Bluetooth wireless. [3] [4] This was the first true mobile malware [5] In March 2005, it was reported that a computer worm called Commwarrior-A had been infecting Symbian series 60 mobile ...