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近年来,随着信息产业的迅猛发展以及多媒体计算机的广泛应用,光盘存储介质已经为人们所熟悉。它是继纸张、胶片和磁性介质后又一种新颖的存储介质。作为档案工作者,为了适应档案管理现代化的需要,应对光盘技术有所了解,并充分利用光盘技术提高档案管理工作的质量。一、光盘的发展史及其分类。从信息存储的角度看,光盘完全可以看成一种新型的纸。一张小小的塑料圆盘,其直径不过12厘米(5英寸)。重量不过20克,而存储容量却高达600多兆字节。如果单纯存放文字,一张 CD-ROM 光盘相当于15万张16开的纸。足以容纳数百部大部头的著作。但是,光盘在记录信息原理上却与纸大相径庭,光盘上信息的写入和读出都是通过激光来实现的。激光通过聚焦后。可获得直径约为1微米(μm)的光束。最初的记录和重放信息的产品就是大家所熟知的激光视盘(LD,Laser Vision Disc)系统。
In recent years, with the rapid development of the information industry and the widespread application of multimedia computers, optical disk storage media have become familiar to the public. It is a new storage medium after paper, film and magnetic media. As archivists, in order to meet the needs of the modernization of archives management, CD-ROM technology should understand, and make full use of optical disc technology to improve the quality of archives management. First, the history of disc development and classification. From the information storage point of view, the CD can be seen as a new type of paper. A small plastic disc, but less than 12 cm (5 inches) in diameter. However, the weight of 20 grams, while the storage capacity is as high as 600 megabytes. If you simply save the text, a CD-ROM disc is equivalent to 150,000 16 open paper. Enough to accommodate hundreds of large books. However, the principle of CD-ROM in the recording of information with paper is very different, the information on the CD-ROM write and read through the laser to achieve. After the laser is focused. A beam of about 1 micrometer in diameter can be obtained. The first product to record and play back information was the well-known LD (Laser Vision Disc) system.