Here’s the technical scoop: Each point of light on a color monitor is formed from a triad of three separate dots of phosphor: one that glows red, one green, and one blue (the color you finally see depends on how intensely each dot in the triad is excited by the picture tube’s electronic beam). Dot gain refers to an increase in the size of these dots when they are actually printed on the paper by the printing press. The succession of graphics adapter standards that IBM produced throughout the 1980s (CGA,EGA,VGA)both defined and confined the graphics capability of personal computers until the arrival of IBM-compatibles and the graphical Windows operating system, which spawned a whole industry manufacturing graphics adapters with higher capabilities. The lower the resolution, the less information there is in a given amount of space (in a square inch, for instance). You can use the mouse to control a cursor or pointer on the screen to do these things, or you can alternatively use the keyboard to do most actions. Most systems enable you to import data from a spreadsheet application to create the charts and graphs. Vector images can easily be rotated and scaled to different sizes with no loss of quality, the computer simply multiplying the endpoint coordinates by a suitable factor. First, if you want to use higher resolutions than the VGA standard of 640x 480, you need a multiscan monitor-a plain VGA monitor will not work at higher resolutions. A great deal of specialized hardware and software has been developed, with the displays of most devices being driven by computer … On a standard television-type monitor, the image you see is formed by a single beam of electrons scanning lickety-split across the picture tube. On the deficit side, GUIs require far more computing resources than older systems. If you see stray dots in an image you’ve scanned, or if a line in a picture is just slightly too thick or too skinny, it’s almost impossible to make precise changes working at normal size. By contrast, a multiscan monitor will work with many different types of adapters, within limits. Offset printing produces higher-quality documents, especially if color is used, but is generally more expensive than laser printing. It can be defined as a simulation of movement created by displaying a series of pictures, or frames. 1. The farther apart the centres of the dots are, the bigger the dots and the fuzzier the image. An alternative representation is to treat a picture as if it were composed of simple geometric shapes and record the relative positions of these shapes; this is called a vector representation (see more under VECTOR GRAPHICS). Monitor is another word for the computer screen. Dithering also makes the best use of the limited number of available colors, like when you open a 24-bit color image (millions of colors) on a computer that’s only capable of displaying 8-bit (256 colors). Definition of Computer Graphics: It is the use of computers to create and manipulate pictures on a display device. Define Computer Graphics. For each of the planar pieces, an intensity value is calculated from the surface normal, the direction to the light, and the ambient light and diffuse coefficient constants. In a duotone, though, the black-and-white photograph (or other artwork) is reproduced using two colors. So you can choose to view these images in low resolution while you are working, just so you can move around the screen faster. Computer graphics image is made up of number of pixels. Examples of drawing graphics packages include CorelDraw, Micrographix Designer and computer aided design (CAD) packages such as AutoCAD. 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