OCR A和OCR B是标准化的等宽字体，专为电子设备上的“光学字符识别”（Optical Character Recognition）而设计。开发OCR A是为了满足美国国家标准协会（American National Standards Institute）于1966年为银行、信用卡公司以及类似机构处理文件而制定的标准。这种字体的目的是通过扫描设备“读取”，而不一定非由人来读取。然而，由于具有“科技”感，它被重新发现用作广告和显示图形。OCR B是1968年由 Adrian Frutiger为符合欧洲计算机制造商协会标准而设计的。它的目的是用于电子设备扫描以及人类阅读的产品上。OCR B于1973年成为世界标准，比其他大多数OCR字体更易于人眼阅读。虽然不像OCR A那么古怪，OCR B版本也具有独特的科技外观，这使其在平面设计师中大受欢迎。
OCR A and OCR B are standardized, monospaced fonts designed for Optical Character Recognition" on electronic devices. OCR A was developed to meet the standards set by the American National Standards Institute in 1966 for the processing of documents by banks, credit card companies and similar businesses. This font was intended to be "read" by scanning devices, and not necessarily by humans. However, because of its "techno" look, it has been re-discovered for advertising and display graphics. OCR B was designed in 1968 by Adrian Frutiger to meet the standards of the European Computer Manufacturer's Association. It was intended for use on products that were to be scanned by electronic devices as well as read by humans. OCR B was made a world standard in 1973, and is more legible to human eyes than most other OCR fonts. Though less appealingly geeky than OCR A, the OCR B version also has a distinctive technical appearance that makes it a hit with graphic designers.