Information processing . representation of 8 - bit sets on 12 - row punched cards 信息处理.位编码字符组在行穿孔卡片上的表示法
2.
Information processing . representation of the 7 - bit coded character set on 12 - row punched cards 信息处理.位编码字符组在行穿孔卡片上的表示法
3.
Punched cards - specification for representation of 7 - bit and 8 - bit coded character sets on 12 - row punched cards 穿孔卡片规范.第3部分: 12行穿孔卡片上位和8位代码字符集表示法规范