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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Professional Graphics Controller ： ウィキペディア英語版 Professional Graphics Controller Professional Graphics Controller (PGC, often called Professional Graphics Adapter and sometimes Professional Graphics Array) was a graphics card manufactured by IBM for PCs.〔http://www.minuszerodegrees.net/oa/OA%20-%20IBM%20Professional%20Graphics%20Controller.pdf〕 It consisted of three interconnected PCBs, and contained its own processor and memory. 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. Introduced in 1984,〔IBM. ''5175 Professional Graphics Display and Controller Announcement Letter''. 1984-09-10 (()).〕 the Professional Graphics Controller offered a maximum resolution of 640×480 with 256 colors at a refresh rate of 60 Hertz—a higher resolution and color depth than EGA and VGA supported. This mode is not BIOS-supported. It was intended for the computer-aided design market and included 320 kB of display RAM and an on-board Intel 8088 microprocessor. The 8088 was placed directly on the card to permit rapid updates of video memory. Other cards forced the PC's CPU to write to video memory through a slower ISA bus. While never widespread in consumer-class personal computers, its US $4,290 list price compared favorably to US$50,000 dedicated CAD workstations of the time. It was discontinued in 1987 with the arrival of VGA and 8514. ==Software support== The board was targeted at the CAD market, therefore a limited software support is to be expected. Yet, the only software known to support the PGC are IBM's Graphical Kernel System, P-CAD 4.5, Canyon State Systems CompuShow〔http://www.seasip.info/VintagePC/pgc.html#software〕〔http://www.cshowplace.com/history.htm〕 and AutoCAD 2.5. 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「Professional Graphics Controller」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.