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HGC is a standard for monitors and video adapters for the IBM PC.

It supports high resolution text mode and one graphics mode. The video adapter was connected to a monochrome (green, light brown or, quite rarely, black and white) monitor.

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In text mode, 25 lines of text with 80 characters per line were displayed on the screen. This mode was compatible with the MDA standard. Resolution in graphics mode is 720*348 pixels.