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数字图书馆不仅是将传统图书馆的印刷、音像作品等资料数字化,而且是把数字化了的资料上载网络,成为网上资源(信息源)。它可以提供各种电子出版物、数据库、Internet网上的各种信息、数字化文献等资料。数字图书馆提供服务不受时间和空间的限制,把过去的以图书馆为中心变为以读者为中心,并可以组成全球性虚拟图书馆,实现全球资源的共享。因此,数字图书馆在服务的广度、深度和效率方面空前理想,成为各国政府关注的焦点。美国1988年就提出“水星”
Digital library is not only the traditional library of printing, audio-visual works and other data digitization, but also the digitized data uploaded to the Internet, as online resources (information sources). It can provide a variety of electronic publications, databases, Internet information, digital documents and other information. Digital library provides services without time and space constraints, the past as the center of the library into a reader-centered, and can form a global virtual library, to achieve global resource sharing. Therefore, the digital library is unprecedented in terms of service breadth, depth and efficiency, becoming the focus of governments of all countries. The United States put forward “Mercury” in 1988