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.
Original price was: $264.16.$132.00Current price is: $132.00.
Specification for punched cards-Representation of 8-bit codes on 12-row punched cards
BSI Group , 11/26/1971
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