Conceptually the Direct View Storage Tube (DVST) behaves like a CRT with highly persistent phosphor. Pictures drawn on there will be seen for several minutes (40-50 minutes) before fading. It is similar to CRT as far as the electronic gun and phosphor-coated mechanisms are concerned. But instead of the electron beam directly writing the pictures … Read more
This works, again, on the principle of combining the basic colors – Red, green and Blue – in suitable proportions to get a combination of colors, but it’s principle is much more sophisticated and stable The shadow mask CRT, instead of using one electron gun, uses 3 different guns placed one by the side of … Read more
One of the basic and commonly used display devices is Cathode Ray Tube (CRT). A cathode ray tube is based on the simple concept that an electronic beam, when hits a phosphorescent surface, produces a beam of light (momentarily – though we later describe surfaces that produce light intensities lashing over a period of time). … Read more
All operations on computers are in terms of 0’s and 1’s and hence figures are also to be stored in terms of 0’s and 1’s. Thus a picture file, when viewed inside the memory, can be no different from other files – a string of OS and 1s. However, their treatment when they are to … Read more
As ancient says “ a pixel is worth thousand words”, graphics is essential everywhere to understand the things, concepts, etc easily. Computer graphics is useful in almost all part of our life Design and Drawing In almost all areas of engineering, be it civil, mechanical, electronic etc., drawings are of prime importance. In fact, drawing … Read more
Computer graphics is an art of drawing pictures, lines, charts, etc using computers with the help of programming. Computer graphics is made up of number of pixels. Pixel is the smallest graphical picture or unit represented on the computer screen. Basically there are two types of computer graphics namely Interactive computer graphics: It is the … Read more
The functioning of a standard graphics system is typically described by an abstraction called the graphics pipeline. The term “pipeline” is used because the transformation from mathematical model to pixels on the screen involves multiple steps, and in a typical architecture, these are performed in sequence; the results of one stage are pushed on to … Read more
A narrow definition of computer graphics would state that it refers to taking a model of the objects in a scene (a geometric description of the things in the scene and a description of how they reflect light) and a model of the light emitted into the scene (a mathematical description of the sources of … Read more