中華人民共和國國家標準
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12053-1989
Alphanumeric character sets for optical recognition--Part 1:Character set OCR-A--Shapes and dimensions of the printed image 光學識别用字母數字字符集 第一部分:OCR-A 字符集印刷圖象的形狀和尺寸
Issued Date:1989-12-29
Implemented Date:1990-07-01
Issued by:
The Standardization Administration of the People's Republic of China