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In addition to the CPU and memory, graphics software requires a graphics monitor and support for one of the many graphics standards. Illustration/design programs are often called draw programs. Variants of these GUI objects are used to control programs under Microsoft Windows, Apple’s MacOS, and on UNIX systems that have a windowing system such as Motif or KDE installed. The main types of graphics packages are painting, drawing, photo editing and CAD. 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 result can be an incredibly rich, powerful image-much richer and more interesting than the image with one color. Some computer screens are grayscale, rather than plainblack-and white (monochrome). The images are stored as bit maps and can easily be edited. It is the acronym for computer-aided design. keep it up. Computer graphics is the computational creation and manipulation of visual data. 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. They work on the principle of electroluminescence, which refers to substances that glow when you apply electricity. In general, applications that support graphics require a powerful CPU and a large amount of memory. A graphic software is defined as a program that can be used to create, manage or edit computer graphics rendered in two dimensions. Ray tracing calculates the brightness, the reflectivity, and the transparency level of every object in the image. Whenever a photograph, painting or drawing containing many colors or gray tones is printed, the colors and tones must be simulated with tiny dots. 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. Dictionary-based algorithms such as LEMPELZIV COMPRESSION are very effective for compressing text, but perform poorly on binary data such as pictures or sound. Providing software support for the plethora of different makes of adapter has become an onerous task for software manufacturers. About Us |  Contact Us |  FAQ |  Write for Us Dinesh Thakur is a Technology Columinist and founder of Computer Notes.Copyright © 2020. Each object, however, is represented as a bit map rather than as a vector image. A typical vector representation might build up a picture from straight lines, storing only the coordinates of the endpoints of each line. 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. (GUI) An INTERACTIVE outer layer presented by a computer software product (for example an operating system) to make it easier to use by operating through pictures as well as words. When you scan an image as a grayscale, each dot on the screen can register a different gray value. 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. When you display a vector graphic on the screen or print it, these formulas are converted into the patterns of dots you can see. Q 4. See paint program for an example illustrating the fixed resolution. You might also have a magnifying glass tool, or a menu command for FatBits or a command to Enlarge. Similarly, moving a block of text in a WORD PROCESSOR that employs a GUI involves merely selecting it by dragging the mouse pointer across it until the text becomes HIGHLIGHTED, then dragging the highlighted area to its intended destination. Fonts, or typefaces, can also be objected-oriented, but they’re not usually referred to this way-instead, such fonts are also known as outline fonts, scalable fonts, or vector fonts. Presentation graphics software: Lets you create bar charts, pie charts, graphics, and other types of images for slide shows and reports. It means by using a personal computer or workstation high-quality printed documents can be produced. To select a graphical object in an object-oriented graphics program, you usually just click on the object with the pointer. The charts can be based on data imported from spreadsheet applications. 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. Depending on the resolution and on the dot pitch, a single pixel may occupy 4 to 16 separate phosphor triads. If you are creating something on your computer that will be output onto film (rather than onto plain paper from your personal printer or onto resin-coated paper from the image setter), you need to know whether the film should be output emulsion side up or down. The superficial similarity between this use of dots in printing and the PIXELS that constitute, pixels actually vary in colour and intensity rather than size. LEDs were used in digital watches, but now all digital watches use LCDs because LCD stakes less power. Some monitors are monochrome, meaning they can show only one color on a background, like black on white (Macs), green on black, or amber on black (pcs). Those are LEDs. However, flat panel screens like LCDS are not referred to as monitors, even if they’re housed externally from a computer. Each object is defined by its vector points, or end points. 9. When you print object-oriented and PostScript images and fonts to an image setter, the information about building those straight lines goes through a RIP (raster image processor), a piece of hardware that stands between the computer and the image setter (printer). A great deal of specialized hardware and software has been developed, with the displays of most devices being driven by computer … A CAD system is a combination of hardware and software that enables engineers and architects to design everything from furniture to airplanes. Often called image editing programs and refractions in high-quality, three-dimensionally simulated computer graphics remains of. Images using dots, not outlines shape of the two different colors bit and traces the next.. 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