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This Document Has Been Superseded
A newer publication replaces it: BSI BS 4636-3
Specification for punched cards -- Representation of 8-bit codes on 12-row punched cards
The one-to-one correspondence between card hole patterns and the bit patterns by which the characters of an 8-bit code are represented;
in appendices, illustrations of the UK 7-bit data code represented on punched cards as a subset of an 8-bit code and illustrations of the card hole patterns corresponding to the remainder of an unspecified 8-bit code.
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