admin管理员组文章数量:1534211
新版计算机专业英语.doc
天天快乐
2.1
Optical laser disk technology eventually may make magnetic-disk and magnetic tape storage obsolete. With this technology, the read/write head used in magnetic storage is replaced by two lasers. One laser beam writes to the recording surface by scoring microscopic pits in the disk, and another laser reads the data from the light-sensitive recording surface. A light beam is easily deflected to the desired place on the optical disk, so an access arm is not needed.
光盘技术最终可能使磁盘和磁带存储淘汰。用这种技术，磁存储器所用的读/写头被两束激光代替。一束激光通过在光盘上刻制微小的凹点，对记录表面进行写；而另一束激光用来从光敏感的记录表面读取数据。由于光束容易被偏转到光盘上所需要的位置，所以不需要存取臂。
Optical laser disks are becoming a very inviting option for users. They are less sensitive to environmental fluctuations, and they provide more direct-access storage at a cost that is much less per megabyte of storage than the magnetic-disk alternative. Optical laser disk technology is still emerging and has yet to stabilize; however, at present there are three main categories of optical laser disks. They are CD-ROM, recordable CD-R and rewritable CD-RW, and magneto-optical disk.
对用户而言，光盘正成为最有吸引力的选择。它们(光盘)对环境变化不太敏感，并且它们以每兆字节比磁盘低得多的存储器价格提供更多的直接存取存储器。光盘技术仍在出现，并且还需要稳定；然而，目前有三种主要类型的光盘。它们是CD-ROM、WORM盘和磁光盘。
CD-ROM
Introduced in 1980, the extraordinarily successful CD, or compact disk, is an optical laser disk designed to enhance the recorded reproduction of music. To make a CD recording, the analog sounds of music are translated into their digital equivalents and stored on a 4.72-inch optical laser disk. Seventy-four minutes of music can be recorded on each disk in digital format by 2 billion digital bits. With its tremendous storage capacity, computer-industry entrepreneurs immediately recognized the potential of optical laser disk technology. In effect, anything that can be digitized can be stored on optical laser disk: data, text, voice, still pictures, music, graphics, and video.
1980年引入的，非常成功的CD，或紧密盘是设计来提高音乐的录音重放质量的光盘。为了制作一张CD，把音乐的模拟声音转换成等价的数字声音，并且存储在一张4.72英寸的光盘上。在每张光盘上可以用数字格式(用2
版权声明：本文标题：计算机专业英语doc,新版计算机专业英语.doc 内容由热心网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：https://m.elefans.com/xitong/1726872671a1088003.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。
发表评论