Home / Standards / GB/T 12508-1990 GB/T 12508-1990 Active Alphanumeric character sets for optical recognition--Part 2:Character set OCR-B--Shapes and dimensions of the printed image 光学识别用字母数字字符集 第二部分:OCR-B 字符集印刷图象的形状和尺寸 Standard Type GBT ICS 35.040 CCS L71 Status 现行 Issue Date 1990-11-15 Implementation 1991-07-01 Responsible Dept 国家标准委 Drafting Unit N/A