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CD player
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===Player control=== The Audio CD format requires every player to have enough processing power to decode the CD data; this is normally made by [[application-specific integrated circuit]]s (ASICs). ASICs do not work by themselves, however; they require a main microcomputer or [[microcontroller]] to orchestrate the entire machine. The [[firmware]] of basic CD players typically is a [[real-time operating system]]. Some early optical computer drives are equipped with an audio connector and buttons for standalone CD playback functionality.<ref>{{Cite web |url=https://www.cnet.com/products/nec-multispin-6x-cdr-1350a-cd-rom-drive-ide/ |title=NEC MultiSpin 6X CDR-1350A - CD-ROM drive - IDE - internal Specs - CNET |access-date=2021-07-19 |archive-date=2021-07-19 |archive-url=https://web.archive.org/web/20210719174756/https://www.cnet.com/products/nec-multispin-6x-cdr-1350a-cd-rom-drive-ide/ |url-status=dead }}</ref>
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