By H. J. Smith, F. A. Williams
Communications of the ACM,
Vol. 3 No. 12, Page 639
The “Survey of Coded Character Representation” by R. W. Bemer (p. 639) covers the representation of symbols in paper tape, magnetic tape and main storage of a number of different machine systems. Another method of mechanical storage is the punched card. The results of a similar survey for punched card codes are shown in the table on page 642.
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