| 摘要 |
A recording and retrieval device is disclosed. The recording and retrieval device generates an electron beam which selectively exposes portions of a film to thereby record digital data on the film. An input circuit adjusts a characteristic of the electron beam selectively expose portions of the film. An anode target is exposed to the electron beam through exposed portions of the film and arranged to generate anode current indicative of digital data stored on the film. A support may secure a sheet of film such that electrons pass through exposed portions of the film. An output circuit operatively coupled to the anode couples the anode current to an external output device.
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