COST VS QUALITY IN COMPUTER-GRAPHICS

The video CRTs found on low-end CAD systems are generally either so-called RGB video monitors or conventional TV sets. But video monitors can cost several times more than TV receivers of an equivalent size due to two main factors, display resolution and volume production. There are two main types of display control found in computer graphics today: character-based and bit-mapped. Character-based graphics is the simplest and least expensive. The most primitive graphics controllers only translate host-computer screen references into bit-map memory locations. High-end graphics systems typically use a graphics controller that can make fast calculation about information displayed on the screen.