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CGA (Color Graphics Adapter) Definition |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Solutions: CGA (Color Graphics Adapter): The Color Graphics Adapter was IBM's first color adapter for the personal computer. It is compatible with red-green-blue (RGB) monitors, color composite, and monochrome composite monitors as well as with standard television sets that have RF modulators. CGA produces characters with an 8 by 8 pixel dot box and graphics in two modes, medium and high resolution. The CGA operates at a horizontal scanning frequency of 15.75 KHz. A monitor must have a bandwidth of at least 14 MHz to be compatible with the CGA. Compared to today's EGA and VGA monitors, the CGA is poor quality. CGA introduced Bit Mapped Graphics. Most CGA's have 128k to 256k Video RAM used to help speed up access of graphic images. |
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