480
CRT monitors use a beam of electrons to form the picture - LCD's use microscopic pixels. CRT's need large amounts of electricity to form the picture - LCD's work with low voltages.
The way a CRT (Cathode Ray Tube) works is very different to LCD and plasma screens. An LCD screen has discrete pixels to generate the image. It is possible to see each one and count them, if you feel so inclined.A CRT on the other hand uses a continuously moving electron bean that is focused on a tiny part of the screen. There are no pixels as such and the resolution of the screen is dependent on how fine the electron beam can be focused.In the early days of HD television, CRT monitors were developed to handle HD resolutions and the image quality was outstanding on them. They all suffered from one big drawback, namely the price. At thirty thousand dollars for a small monitor, they never found their way into the residential market and even the broadcasters balked at paying that amount. The development of ever better plasma and LCD televisions very quickly killed off any chance of the HD CRT being seen in homes.
This is called "resolution." It is typically two numbers, such as 1024 by 768. This is the width and height of the screen in pixels.
There aren't pixels as such. the face of the CRT is coated with phosphors that light up when electrons strike them. The equivalent pixels would be a function of beam size. Moving on to later color CRTs, there was a mask overlay to force a pixel effect and isolate the RGB beams to one 'pixel' area. Pixels don't become real until you have a true digital display when there are in fact individual pixels to light up.
The pictures or graphics that you see on a computer screen are composed of just three colors: red, green, blue, or combinations of these three. The computer determines the appropriate color by the amount of light or color in conjunction with a numeric representation of the color. The technical name used to represent every color bit in a computer is a pixel or picture element. The pixel is a tiny square of color. Used in conjunction with millions of other pixels, it gives us an image that our eye can recognize. The number of pixels determines the quality of the cathode ray tube (CRT) on the screen. The higher the number of pixels, the better resolution you'll have. But mapping is the computer's technique to manipulate the pixels on your screen.
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small pixels
one megapixel is a million pixels, so 9.2 mega pixels would be 9.2 million pixels, or 9,200,000 pixels.
123,200 pixels = 0.1232 megapixels.
A Pixel is a picture element. (pix + el...) It may be of any dimension suited to the use. The CRT screen in front of me is only a few million pixels, but is adequate for the purpose. A nanometre is 10-9 of a metre.
Pixels