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Disc or disk (computing and American English) may refer to: == Data storage == * Disk storage, a general category of data storage mechanisms * * Magnetic disk * * * Floppy disk, a magnetic data storage device using a flexible disc * * * Hard disk drive, a non-volatile magnetic data storage device * * Optical disc, commonly a polycarbonate disc * * * Blu-ray Disc (BD), a high-density optical disc intended mainly for video storage * * * Compact Disc (CD), a form of optical disc used mainly for audio data * * * Digital Versatile Disc (DVD), a form of optical disc used mainly for video and other data * * * Enhanced Versatile Disc (EVD), an optical medium-based digital audio/video format under development * * * High-Definition Digital Versatile Disc (HD DVD), a high-density optical disc intended mainly for video storage * * * Holographic Versatile Disc (HVD), a next generation ultra-high-density optical disc format replacement for Blu-ray * * * Laserdisc (LD), the first commercial optical disc storage medium * * * MiniDisc (MD), a magneto-optical disc-based data storage device * * Disc film, a still-photography film format * * RAM disk, a volatile solid state drive * Analog discs typically relying on a modulated groove to record signals * * Gramophone record, an analog recording medium * * LP record, a specific type of gramophone record * * Aluminum disc, an analog recording disc used mainly for early radio recordings * * Acetate disc, an aluminium disc coated with nitrocellulose lacquer 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「Disc」の詳細全文を読む スポンサード リンク
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