DESC: CompactFlash Card, which weighs a half ounce and is the size of a matchbook, is an ultra-small, removable data storage system. Introduced in October, 1994, CF provides complete PC Card-ATA functionality and compatibility. CF has built-in, industry-standard compatibility because the 50-pin CF card can be easily slipped into a passive 68 pin Type II adapter card that fully meets PC Card electrical and mechanical interface specifications. CF has been designed into more than 200 new mobile products, and more than 135 of those products including digital cameras, HPCs and audio recorders have been introduced. CF is widely used in digital cameras, PDAs, HPCs, personal communicators, medical monitors and audio recorders because it expands the functionality of those products and enables them to be smaller and lighter.