随着电子技术的飞速发展和计算机的普及,作为信息主要载体的纸张开始让位于电子媒体,目前一些发达国家已将电子图书推向市场,人类的“无纸”时代正在逐步实现。 与纸张相比,电子媒体利用计算机技术贮存和处理信息。它具有容量大、体积小、检索快、易于复制和保 With the rapid development of electronic technology and the popularization of computers, the paper as the main carrier of information begins to give way to the electronic media. At present, some developed countries have brought electronic books to the market. The era of “paperless” is gradually being realized. Compared with paper, electronic media uses computer technology to store and process information. It has large capacity, small size, fast retrieval, easy to copy and protect