A card on which binary coded data are recorded with recordingdensity larger than a punched card. The recorded data can be readout by optical or magnetic readers.
一种二进制编码数据卡片,其记录密度大于穿孔卡片。所记录的数据可由光学或磁学读卡机读出。
2
The solutions for optical mass storage system and their principles are analyzed briefly, based on which, the key technologies for the improvement of the recordingdensity are discussed.
在此基础上,扼要分析了现有提高存储器存储密度的思路及关键技术,给出当前国际先进水平的技术指标。
3
The recording materials matched with the recordable high densityoptical compact disc develop quickly.