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Also found in: Acronyms.


A flash memory format introduced in 1994 by SanDisk. At approximately 36x43x3mm, CompactFlash (CF) cards are much larger than the SD Cards used in most cameras; however, they are still used in digital SLRs, and many photographers find the larger size harder to misplace. CompactFlash supports both 3.3v and 5v circuits and can hold up to 512GB as of 2015.

Data transfer speeds are designated as multiples of the first CD-ROM rate of 150 KB/sec. For example, 1,000x = 150 MB/sec. See CD-ROM drives.

CF Cards Use the PC Card Interface
Type I CF cards are 3.3mm thick and commonly used for camera storage. Type II cards are 5mm thick and were previously used for miniature hard drives, modems and Ethernet. On earlier laptops, adapters enabled the 50-pin Type II CF card to plug into the 68-pin PC Card slot. See Microdrive and PC Card.

CompactFlash Module
CompactFlash modules are still used in digital SLR cameras with capacities up to 512GB. For form factor comparisons, see memory card.
References in periodicals archive ?
Defects from FA 1, with its highest CF2 content, are not surprising.
Dry matter (DM) and C content of clay-sized fractions CF1 (<1 [micro]m) and CF2 (1-2 [micro]m) in the 0-15 cm and 15-25 cm soil layers as influenced by tillage and the proportion of overwintering crops in the rotation (mean data 2004-2006) Treatment 0-15 cm DM, g [kg.
Multiple regression analysis was also performed with CF1, CF2, and GR as variables, and SI3 and RT3 as predictor variables, r, R, and r' denote simple correlation coefficient, standard multiple correlation coefficient, and standard partial regression coefficient, respectively.
2 years), while CF2 subscribers were the same age as the entire group average of 38.
Please keep them coming to: Welsh Mirror, Regus House, Malthouse Avenue, Cardiff Gate, Cardiff CF2 7RV.
Anyone wanting to nominate someone in Rugby should send their entry - with a letter of 100 words or less - to the WRVS at 6 Cleeve House, Lambourne Crescent, Llanishen, Cardiff CF2 5GJ.
Brian Brace, 16 Roden Court, Southey Street, Roath, Cardiff CF2 1AS
FOR details of accommo- dation and attractions contact the Wales Tourist Board, Brunel House, 2 Fitzalan Road, Cardiff CF2 IUY (tel: 01222 499909): Wales Holidays (tel: 01686 625267).
Further information: The Wales Tourist Board, Brunel House, 2, Fitzalan Road, Cardiff CF2 1UY.
The new model CF2 centrifuge (pictured) is fully programmable giving control over both spin speed and spin time.
Located in booth CF2 of the Advanced Technology Showcase, the CCC will demonstrate a MirrorLink-enabled Sony([R])XAV 701HD paired with a Nokia E7 smartphone.
Additional projects, that may be required to further mitigate the volume and octane impact of CF2 and to restore capacity to pre-CF2 levels, are currently being investigated in respect of Sasol Synfuels.