The main elements of the digital library system structure are digital target, handle and storage.

数字图书馆体系结构的主要构件是数字对象、句柄和仓储。

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Called "Mosaic, " the app offers a visually stunning, multi-touch screen designed to enable consumers to personalize and read all of their news via one reader and offer advertisers an innovative digital advertising model to target audiences.

ENGADGET: Tribune's Mosaic app brings elegant media aggregation to Windows 7 tablets, soon to Windows Phone 7

As the missile nears its target, the Digital Scene Matching Area Correlation system takes over.

BBC: Tomahawk cruise missile

Yet their antiquated control systems lack protection against digital intrusion, providing an easy target.

FORBES: The Next Threat