1.Medium persistence traces are mostly used for general purpose applications.
2.Short persistence is needed for extremely high speed phenomena.
CRT stands for Cathode Ray Tube. It refers to a vacuum tube that contains an electron gun and a fluorescent screen, used to display images in older television and computer monitors.
The cathode ray tube (CRT) is an evacuated glass envelope containing an electron gun (a source of electrons) and a fluorescent screen, usually with internal or external means to accelerate and deflect the electrons. When electrons strike the fluorescent screen, light is emitted. Source: Copied from Wikipedia
Cathode ray tubes have the task of converting electronic signals into a beam of electrons that create pictures on a screen. In most cases, the screens are made of fluorescent tubes.
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The abbreviation is CRT.
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Revolution
CRT stands for Cathode Ray Monitor. These monitors have a glass screen.
A CRT, cathode ray tube, is used in televisions and traditional computer monitors to create images by deflecting and accelerating the electron beans onto the screen. It is a vacuum tube that contains electron guns.
The forerunner to the touch screen was the light pen. A light pen would be used to select buttons or check boxes on a standard CRT.