The electrons are negative and the screen gives a positive charge so the screen glows. The heated filament is in a vacuum created inside a glass tube. In a CRT monitor tube, the cathode is a heated filament. BACKĥ How CRTs work & display? A CRT monitor contains millions of tiny red, green, and blue phosphor dots that glow when struck by an electron beam that travels across the screen to create a visible image. They are heavy to pick up and carry around. Within a CRT a strong vacuum exists in it and can also result in a implosion. CRTs operate at very high voltage which can overheat system or result in an implosion. Constant refreshing of CRT monitors can result in headache. CRTs emit a small amount of X-ray band radiation which can result in a health hazard. The electromagnetic fields emitted by CRT monitors constitute a health hazard to the functioning of living cells. BACKĤ Disadvantages of CRT They have a big back and take up space on desk. The contrast features of the cathode ray tube monitor are considered highly excellent. The quality of the image displayed on a Cathode Ray Tube is superior to the LCD and Plasma monitors.
They produce more colours The Cathode Ray Tube monitors have lower price rate than the LCD display or Plasma display. Disadvantages of CRT - How CRTs work & display? Liquid Crystal Display(LCD) -Advantages of LCD -Disadvantages of LCD - How LCD work & display? Plasma -Advantages of Plasma -Disadvantages of Plasma - How Plasma work & display?ģ Advantages of CRT The cathode rayed tube can easily increase the monitor’s brightness by reflecting the light. 2 Contents Cathode Ray Tube (CRT) -Advantages of CRT
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