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The Plantronics Colorplus was a graphics card for IBM PC computers,〔(【引用サイトリンク】 title=Colorplus High Resolution Color Graphics Adapter from Plantronics (1984) )〕 first sold in 1982. It was a superset of the then-current CGA standard, using the same monitor standard and providing the same pixel resolutions. It was produced by Frederick Electronics, of Frederick, Maryland. The ''Colorplus'' had twice the memory of a standard CGA board (32k, compared to 16k). The additional memory could be used in graphics modes to double the color depth, giving two additional graphics modes—16 colors at 320×200 resolution, or 4 colors at 640×200 resolution. It used the same Motorola MC6845 display controller as the previous MDA and CGA adapters.〔 The original card also included a parallel printer port. ==Output capabilities== CGA compatible modes: *160×100 16 color mode *320x200 in 4 colors from a 16 color hardware palette. Pixel aspect ratio of 1:1.2. *640×200 in 2 colors. Pixel aspect ratio of 1:2.4 *40×25 with 8×8 pixel font text mode(effective resolution of 320×200) *80×25 with 8×8 pixel font text mode(effective resolution of 640×200) In addition to the CGA modes, it offers: *320x200 with 16 colors *640x200 with 4 colors *New high-resolution text font 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Plantronics Colorplus」の詳細全文を読む スポンサード リンク
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