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SanDisk ships 1GB Secure Digital card

Removable flash memory maker SanDisk announced Tuesday it is shipping a 1GB Secure Digital card. The card costs $499.99 and can store more than 30 hours of compressed digital audio, according to the Sunnyvale, Calif.-based company. The card uses a "stackable" packaging technology that SanDisk worked on with Sharp. The technology allows for low-cost, high-yield die stacking so that memory capacity can be increased without having to expand the size of a card. Secure Digital cards are roughly the size of a postage stamp.

The same packaging technology can also be used with other cards types such as CompactFlash and Memory Stick.