单词 | photodigital memory |
释义 | photodigital memoryA memory consisting of photographic film on which data is written by laser beam or focused light beam in the form of exposed dots (1bits) and unexposed areas of dot size (obits). When the film is developed, it becomes a permanent readonly memory.; 利用激光束或聚焦光束将数据写入照象胶片而形成的存储单元。 凡曝过光的点作为二进制1,未曝光区域的点作为二进制0。在胶片显影后变成永久性只读 存储器。 |
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