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A portable CD player is a portable audio player used to play Compact discs. The first audio player released was the D-50 by Sony.〔Lungu, R. ("History of the Portable Audio Player." ) 2008-11-27.〕 == Features == The basic features of a portable CD player are: #Play/Pause #Stop #Rewind #Fast forward #Hold (some models) #Liquid crystal display #Headphone/audio out socket The play and pause feature allows the user to pause in the middle of the track (song) and resume it at the same place the listener left off at once the play button is hit again. The stop feature stops the track allowing the user to then switch tracks easily. The fast forward and rewind feature will either fast forward or rewind the track the amount of time you hold the button down. The liquid crystal display provides a visual of how much battery is left, what track (number) is currently playing, and the amount of time elapsed on the track. Some portable CD players can play CD-R/CD-RW discs and some can play other formats such as MP3-encoded audio. The 8 cm CD provides a smaller alternative to the normal 12 cm CD (although with a lower capacity). Miniature players exist that only play this format.〔"Portable CD Players Product Guide" http://www.jr.com/product/productGuide.jsp?contentPath=/Content/media/html/productGuides/Audio/portableCDPlayers.html〕 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「Portable CD player」の詳細全文を読む スポンサード リンク
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