Photographic media are examined as vehicles for the storage of digital information. Storage devices of total capacity in the range from 107 to 109 bits, with favorable random-access features, appear to be achievable. Alternative methods of reading are suggested. The logical association of a much smaller erasable storage unit (such as a magnetic drum) with a large photographic store completely removes, for most practical applications, the difficulties arising from the fact that rapid erasure and rewriting are not possible in a photographic storage medium. Methods for writing in the information to be stored are briefly considered.
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King et al. (1953) studied this question.