CRT



= = =What is a CRT ?=

CRT An abbreviation for Cathode Ray Tube this certain technology is also used in televisions and our everyday computer displays. The picture above shows the heater produce electron beams and then flows into the Fluorescent scene. The electron beams travel back and forth from the screen. Each time the beam passes across the screen it gives off a light of phosphor. By drawing many lines from the top to the bottom of the screen, it creates an entire screen of images it also creates colour that the naked eye can see.


 * HISTORY OF THE CRT!**

A Cathode Ray Tube is used in today’s Monitors and also used in our televisions. A Cathode Ray Tube a specialized vacuum where images are produced when electronic beams strike the phosphorescent surface. Television and monitors are just two examples of a phosphorescent surface. Multiple electronic beams show up which allow the CRT to display different colours

-1859: Julius Plucker, a German physicist and mathematical person identifies the Cathode Rays. -1878: Sir William Crookes was able to prove cathode rays exist by providing working temples cathode ray tubes with the Crookes tube. His invention proved to be the best for the future of CRT’s //1897: CRT oscilloscope invented by German, Karl Herdinand Braun. Called the Braun Tube, it morphed into television and radar tube in modern history.// -1929: The kinescope cathode ray tube was invented b Vladimir Kosmas Zworykin. It formed some of the first television screen. -1931: Allen B. Du Mont was the first to invent the first recordable CRT used on Television sets.
 * Short Timeline of the C.R.T and its improvement..!**

Cathode Ray Tubes have improved since the finding of Electronic devices. New monitors based on the science of the Cathode Ray and the Electron lined the way for the present day’s displays in all company and consumer fields. Yet the CRT's are still improving even to this day. They have many disadvantages and advantages.


 * Some advantages are:**

- The Resolution and aspect ratio. This is great factor of using a CRT as it can operate at all sorts of resolutionswithout needing to rescale the image - It also has a high resolution and it can work at the very highest of resoltutions available. - It also produced very dark blacks and also high contrast of colours levels that are normally used. - It also produces the very best colour and grey scale. - It responds faster to no motion time - It is also less exensive compared to the LCD display screen. - This is one of the technologies that can reproduce natural power.

-** The sharpness is not as good as the LCD display screen. The CRT displays soft edges unlike the LCD. - The CRT colour produce certain patterns that get annoying at times. - CRT can effect the magnetic field from other equiptment that contain CRT. - it shouldn't be used in highly lighted environment as it is not as bringht as the LCD. - but physical they lager, heavy and bulky.
 * Some disavdvantgages:

Most of the CRT are becoming smaller and they are trying to make it a lot easier to carry around. It may take many years but the improvements are still coming in many different ways. There are CRT's comming in different sizes now they are coming big and small. they are trying to impraove the CRt bymaking a few adjustments like making it smaller andimproving the quality f the picture that is shown.
 * FUTURE.**


 * COSTS:**

The CRT is much less and also less expensive than the LCD display. It can be purchased for $100.00 or less.