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The PGC was, at the time of its release, the most advanced graphics card for the IBM XT and aimed for tasks such as CAD. [ 2 ] Introduced in 1984, [ 3 ] the Professional Graphics Controller offered a maximum resolution of 640 × 480 with 256 colors on an analog RGB monitor , at a refresh rate of 60 hertz—a higher resolution and color depth ...
Each screen character is represented by two bytes aligned as a 16-bit word accessible by the CPU in a single operation. The lower (or character) byte is the actual code point for the current character set, and the higher (or attribute) byte is a bit field used to select various video attributes such as color, blinking, character set, and so forth. [6]
Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again. Troubleshooting is needed to identify the symptoms.
Lists of graphics cards follow. A graphics card, or graphics processing unit , is a specialized electronic circuit that rapidly manipulates and alters memory to build images in a frame buffer for output to a display.
The video output is 5 V TTL, as with the MDA card. [ 6 ] [ 7 ] [ 8 ] Nominally, the Hercules card provides a horizontal scanning frequency of 18.425 ± 0.500 kHz and 50 Hz vertical. [ 9 ] It runs at two slightly different sets of frequencies depending on whether in text or graphics mode, providing a different vertical refresh rate and a ...
POST cards for PCs, while originally high-priced, cost from just a few US dollars upwards in the 21st century. Some motherboards have a built-in display to diagnose hardware problems. Most also report POST errors with audible beeps, if a PC speaker is attached. Such motherboards make POST cards less necessary.
Matrox Graphics is the primary consumer and end-user brand, while Matrox Video markets digital video editing solutions, and Matrox Imaging sells high-end video capture systems and "smart cameras", video cameras with a built-in computer for machine vision applications. 2016, Matrox introduced the C-series of graphics cards based on GPUs from AMD.
The headers in the table listed below describe the following: Model – The marketing name for the GPU assigned by AMD/ATI.Note that ATI trademarks have been replaced by AMD trademarks starting with the Radeon HD 6000 series for desktop and AMD FirePro series for professional graphics.