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compactflash

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CompactFlash

A flash memory format introduced in 1994 by SanDisk Corporation, Milpitas, CA (www.sandisk.com). At 36.4 x 42.8 x 3.3 mm, CompactFlash (CF) cards are larger than other flash cards, but are...

Dictionary

Definition: CompactFlash

A flash memory format introduced in 1994 by SanDisk Corporation, Milpitas, CA (www.sandisk.com). At 36.4 x 42.8 x 3.3 mm, CompactFlash (CF) cards are larger than other flash cards, but are popular storage in digital SLRs, which more easily accommodate their size than small point-and-shoot cameras.

Appearing to the camera as a hard disk, CompactFlash (CF) uses a 50-pin PC Card interface. CF cards plug into 50-pin sockets in digital cameras or a 68-pin Type II PC Card slot in a laptop with a 50-to-68-pin adapter. The technology supports both 3.3v and 5v circuits.

Type II Cards Are Thicker
Type II CompactFlash (CF2) cards are the second-generation format, which increases the thickness from 3.3 to 5mm. The extra thickness allows for more electronics; for example, IBM's Microdrive houses a hard disk in the CF2 format. In 2004, Pretec Electronics Corporation (www.pretec.com) introduced a 12GB CF2 memory card. See Microdrive.

What Does the X Mean?
The write speed of CompactFlash cards is designated as a multiple of 150 kilobytes per second. For example, 40x = 6MB/sec; 60x = 9MB/sec; 66x = 10MB/sec and 80x = 12MB/sec.


CompactFlash

CompactFlash Module
CompactFlash modules have become very popular as storage for \"digital film.\" See flash memory for size comparison.





Sponsored White Papers, Webcasts & Resources

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    Lexar Media begins shipping 128GB high-capacity, high-speed SDXC memory cards.

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  • New PCIe-based CompactFlash standard promises higher speed, greater capacity

    Three tech giants have come together to propose a new CompactFlash standard that is based on the PCI Express interface which promises higher speeds and greater capacities.

    Blog posts | November 30, 2010 9:16am PST

  • SanDisk releases Extreme Pro CompactFlash cards

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    Blog posts | September 14, 2009 6:51am PDT

  • IBM 1 GB Microdrive

    Looking for an easy way to carry 2,500 .JPG images? How about 275 MP3 files? A 200,000-contact Outlook database? IBM's revved-up 1.0 GB Microdrive Travel Kit can boost your productivity and fun...

    News items | October 3, 2000 12:00am PDT

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