ISO 1155:1978 PDF

Scope: Describes method for error detection in information messages by attaching one block check character to the transmitted information block (or text) and checking this character when it is received. Applicable to systems with 7-bit-coded character set according to ISO 646, and basic mode for implementing this 7-bit code in data communication systems according to ISO 1745. Conforms to rules for generating character paritity bits according to ISO 1117 that parity sense shall be odd in synchronous and even in anchroneous systems.

ISO 1155:1978 history

1978 ISO 1155:1978 Information processing - Use of longitudinal parity to detect errors in information messages
1973 ISO 1155:1973 Title missing - Legacy paper document