After evaluating existing OCR designs, it was decided to develop two new fonts: A stylized design with just digits, called “Class A” and a more conventional type design with broader character coverage, called “Class B”. In June 1961, the European Computer Manufacturers Association (ECMA) started standardization activities related to Optical Character Recognition (OCR). It shares that purpose with OCR-A, but it is easier for the human eye and brain to read and it has a less technical look than OCR-A. It is also used for machine-readable passports. It is widely used for the human readable digits in UPC/ EAN barcodes. It includes all ASCII symbols, and other symbols needed in the bank environment. It follows the ISO 1073-2:1976 (E) standard, refined in 1979 ("letterpress" design, size I). It was accepted as the world standard in 1973. Its function was to facilitate the optical character recognition operations by specific electronic devices, originally for financial and bank-oriented uses. OCR-B is a monospace font developed in 1968 by Adrian Frutiger for Monotype by following the European Computer Manufacturer's Association standard.
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