Sunday, September 1, 2013

Introduction To Computer Graphic Display Systems

By Gloria Mason


Computer graphics are brilliant systems in the world of computing. They can be utilized in a wide variety of areas like displaying results of engineering and scientific computations or visualizations, production of TV ads and feature films, to analyze and simulate real problems of the world together with computer aided design. Other uses include the increase of the communication bandwidth between humans and machines through graphical user interfaces. The art of creating images with a computer has countless applications thus facilitating the importance of learning the basics of computer graphic display systems.

The introduction of CRTs brought about a significant evolution in the field of computing. People no longer have to depend on cryptic commands or awkward and time consuming punching cards. Computer graphics happen to be application-oriented. Ivan Sutherlands Sketchpad was the first application that made it possible for users to draw on screens. Despite it seeming trivial, it is a significant breakthrough in the graphical field and has shown to everyone that computers can be used interactively in the production of graphical output on a CRT.

Afterwards, paint systems arrived that made the basic communication between computer and humans more pictorial. Others included desktop publishing, Word processing and business graphics such as analytical charts and other information displays that made the message emphatic and forceful.

CAD was next to arrive, and it allowed quick and easy design of electronic switchboards, buildings, mechanical systems and floor plans. Simulation of real life problems to make major savings and safe environments for learning was also made possible by them. The advent of PC games helped make computer graphic systems even popular.

From image warping to 3D rendering, the capabilities of modern GCDs (Graphic display controllers) appeal to the eye over a wide variety of applications. High-end controllers help define the style and value of a product with dynamic graphics that impress consumers. Modest controllers on the other hand display information simply and clearly, providing users with what they want with minimal fuss.

Whether totally dazzling or merely functional, good designs are rewarded by a graphical system in quite remarkable ways, hence they deserve keen attention. When designing good graphics, the first step is to choose a GCD that can support the applications goals having the right functionality at an affordable price point. The performance/price of GCD can be categorized into three groups: basic level, high level and mid level.

There are several factors that influence the architecture of implanted designs, one of them being cost pressure. A textbook example of a cost-sensitive application area is the automotive industry, in which one of the major priorities is minimization of the bill of materials. In mid and basic level applications, designers can address this need by using system-on-a-chip controllers as a workable single-chips solution. These GCDs can communicate with one another via the CAN, and can induce shutdown power modes to save battery power.

Some internal capacity limitations in VRAM and inbuilt system bottlenecks however, can limit the functionality level of graphic display systems together with their maximum size of display.




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