See the section in Appendix A on how to read a computer monitor advertisement. The term vector graphics means exactly the same thing as object-oriented (or just object) graphics. About Us |  Contact Us |  FAQ |  Write for Us Dinesh Thakur is a Technology Columinist and founder of Computer Notes.Copyright © 2020. The charts can be based on data imported from spreadsheet applications. It can be defined as a simulation of movement created by displaying a series of pictures, or frames. Whereas video takes continuous motion and breaks it up into discrete frames, animation starts with independent pictures and puts them together to form the illusion of continuous motion. 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. It is usual for the operating system itself to draw most of the screen objects (via SYSTEM CALLS) to relieve application programs from the overhead of creating them from scratch each time, which means that GUI-based operating systems require typically 100 to 1000 times more working memory and processing power than those with old text-based interfaces. 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). Presentation Graphics To produce illustrations which summarize various kinds of data. In addition, the computer keeps track of design dependencies so that when the engineer changes one value, all other values that depend on it are automatically changed accordingly. Each individual dot is printed using a single coloured ink of fixed intensity, and the intensity of colour the reader perceives is controlled by varying the size and density of the dots to reveal more or less of the underlying white paper. Once you have produced a document with a desktop publishing system, you can output it directly to a, In general, applications that support graphics require a powerful. For instance, since pixels are so tiny, if the computer intermingles a series of black with white dots then you’re going to think you’re seeing gray. Presentation graphics is often called business graphics. Except 2D, … Rendering involves extra work for the computer, which is performed either by software or by special hardware called a GRAPHICS ACCELERATOR. 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). 2. A typical vector representation might build up a picture from straight lines, storing only the coordinates of the endpoints of each line. 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. The computer achieves this optical illusion by mixing together different colored pixels (tiny dots on the screen that make up an image) to trick the eye into thinking that a totally new color exists. In a, A duotone (or tritone or quadtone) does not refer to the use of, The dot pitch of a color monitor measures the size of the tiny individual dots of phosphorescent material that coat the back side of the picture tube’s face. Rather than dots of varying sizes, a dithered image has dots or squiggles all the same size, arranged in such a way as to create the illusion of gray values. Object-oriented (vector) graphics and fonts are created with outlines. The main types of graphics packages are painting, drawing, photo editing and CAD. 1.1 Application of Computer Graphics Computer-Aided Design for engineering and architectural systems etc. The most natural representation for a picture inside the computer is therefore just a list of the colours for each dot in the output; this is called a BITMAPPED representation. There’s much less inconsistency in the Macintosh world, so a multiscan monitor isn’t so important. Vector and bitmapped representations have complementary strengths and weaknesses. The dot pitch of a color monitor measures the size of the tiny individual dots of phosphorescent material that coat the back side of the picture tube’s face. The process by which CONTINUOUS TONE photographs are reproduced in print (for example in newspapers and magazines) by reducing them to a grid of tiny dots. The software in the RIP turns the straight lines into the dots that the image setter will print, in resolutions like 1270 or 2540 dots per inch, When you output (print) to a laser printer that understands PostScript, the computer chip inside the PostScript printer rasterizes the images so they can be printed in dots, usually with a resolution of 300 to 600 dots per inch. You also might hear a monitor called a display, as in “Oooh, I got a new two-page display,” or VDT(video display terminal), as in newspaper journalism, or CRT (cathode ray tube), which is the technical term for a picture tube. Presentation graphics is often called business graphics. Since a computer can ultimately deal only with binary numbers, pictures have to be DIGITIZED (reduced to lists of numbers) in order to be stored, processed or displayed. The term harks back to the original 1981 IBMPC which could display only text, and required such an optional extra card to ‘adapt’ it to display graphics. Vector representations are most suitable for pictures that are actually drawn on the computer (such as engineering drawings, document layouts or line illustrations), and for images that must be reproduced at various sizes (such as fonts). Monitor is another word for the computer screen. Vector representations are easily edited by moving, resizing or deleting individual shapes, whereas in a bitmap all that can be changed is the colour of the individual pixels. Most paint programs provide the tools shown below in the form of icons. When you’re shopping for a VGA monitor, keep several points in mind. 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