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PC Card
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{{Short description|Expansion card standard for laptop computers}} {{infobox computer hardware bus | logo = PC Card logo.svg | logo_size = 100px | image = Various PC Cards (cropped).jpg | caption = Various PC Cards, with the left one being a CardBus PC Card | invent-date = 1990 | invent-name = [[Personal Computer Memory Card International Association|PCMCIA]] | super-name = [[ExpressCard]] | super-date = 2003 | width = 16 or 32 | numdev = 1 per slot | speed = 133 MB/s{{citation needed|date=November 2014}} | style = p | hotplug = Yes | external = Yes | website = {{web archive|url=https://web.archive.org/web/19971211120713/http://www.pc-card.com/|title=pc-card.com}} }} '''PC Card''' is a [[technical standard]] specifying an [[expansion card]] interface for [[laptops]] and [[personal digital assistants|PDAs]].<ref>{{Cite book |last=Imdad-Haque |first=Faisal |title=Inside PC Card: CardBus and PCMCIA design |date=1996 |publisher=[[George Newnes Ltd]] |isbn=978-0-7506-9747-7 |series=EDN series for design engineers |location=Boston}}</ref> The [[PCMCIA]] originally introduced the 16-bit [[Industry Standard Architecture|ISA]]-based '''PCMCIA Card''' in 1990, but renamed it to PC Card in March 1995 to avoid confusion with the name of the organization.<ref>{{Cite book |last=Rathbone |first=Tina |url=https://books.google.com/books?id=PDgEAAAAMBAJ&pg=PA87|title=Changing of the card |date=1995-12-18 |publisher=InfoWorld Media Group, Inc. |pages=87 |language=en}}</ref> The '''CardBus PC Card''' was introduced as a 32-bit version of the original PC Card, based on the [[Peripheral Component Interconnect|PCI]] specification. CardBus slots are [[Backward compatibility|backwards compatible]], but older slots are not [[Forward compatibility|forward compatible]] with CardBus cards. Although originally designed as a standard for memory-[[expansion card]]s for [[computer storage]], the existence of a usable general standard for notebook peripherals led to the development of many kinds of devices including [[network card]]s, [[modem]]s, and [[hard disk]]s. The PC Card port has been superseded by the [[ExpressCard]] interface since 2003, which was also initially developed by the PCMCIA. The organization dissolved in 2009, with its assets merged into the [[USB Implementers Forum]].
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