This International Standard defines the implementation of the IS0 7-bit and B-bit coded character sets on punched cards. It specifies the representation of 7-bit combinations and 8-bit combinations on 12-row punched cards. This representation is derived from, and compatible with, the code known as the &8220;Hollerith Code&8221;. It will ensure compatibility with a large proportion of existing punched card files.
ANSI/INCITS/ISO 6586:1980 history
1980ANSI/INCITS/ISO 6586:1980 Data Processing - Implementation of the ISO 7-Bit and 8-Bit Coded Character Sets on Punched Cards