September 9, 2013

Introduction To Computer Graphic Display Systems

By Gloria Mason


In the field of computing, computer graphics are quite wonderful systems. They are used in diverse areas such as results displays of scientific and engineering visualizations and computations, production of feature films and television commercials, analysis and simulation of real world problems as well as computer aided design. The graphics are also used in graphical user interfaces capable of increasing the bandwidth of communication between machines and humans. The art of picture creation using a computer has many applications, hence it is important to look at the intrinsics of computer graphic display systems.

The advent of cathode ray tubes brought about major changes in the computing world. No longer do people have to depend on time consuming and awkward punching cards or cryptic commands. Computer graphics are application oriented. The earliest application was the Sketchpad by Ivan Sutherland that enables a user to make drawings on a screen. Although it may seem trivial, in the graphical field it is a major breakthrough and has proven to all that computers can be utilized interactively to produce graphic output on a cathode ray tube display.

The subsequent arrival of paint systems made the essential computers to humans communication to be more pictorial. Other applications such as desktop publishers, word processors analytical charts and business graphics made the messages sent to appear more emphatic and forceful.

Computer aided designed followed suit, which allowed easy and speedy design of mechanical systems, buildings, electronic circuit boards or floor plans, and simulation of real world problems in a way that provides major savings and a safe learning environment. Computer games also arrived, significantly producing to the popularity of computer graphic systems.

From 3D rendering to image warping, the functionalities of modern GCDs is appealing to consumers eyes as a result of their various applications. Top-end controllers give products dynamic graphics that define their style and value, hence impressing potential consumers. Modest controllers on their part present information in a simple and clear manner, providing users with what they require will no fuss.

Whether absolutely dazzling or simply functional, a graphics system rewards good designs in very remarkable ways, thus deserving careful attention. The first step in creating good graphics involves choosing as GCD capable of supporting goals of the application with the correct functionality at an ideal price point. GCD performance/price can be put into three categories; basic level, mid level and high level.

There are a number of factors that determine the architecture of embedded graphics, with cost pressure being one of them. The automobile industry is a good example of an application area that is cost sensitive, where minimizing the bill of materials is one of the main priorities. In basic and mid level applications, this need can be addressed by designers through the use of system-on-a-chip graphic controllers as a real single-chip solution. Such GCDs are capable of communicating with each other through the CAN bus and in order to preserve battery power, they can go into shutdown modes of power.

The functionality levels of graphic display systems can be however limited by some factors they include internal capacity limitations within VRAM and embedded system bottlenecks, which can reduce the maximum size of available display.




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