定义穿孔卡片上ISO 7位和8位编码字符集的实现，以及12行穿孔卡片上7位和8位组合的表示。此表示法源自Hollorith代码，并与之兼容。确保与现有穿孔卡片文件广泛兼容。用于数据处理系统之间的一般信息交换。

Defines implementation of ISO 7-bit and 8-bit coded character sets on punched cards as well as the representation of 7-bit and 8-bit combinations on 12-row punched cards. This representation is derived from, and compatible with, the Hollorith Code. Ensures widely compatibility with existing punched card files. Intended for general interchange of information among data processing systems.