BS 5464-1: BRITISHSTANDARD 1977 ISO 1073-I: 1976 Specificationfor Optical character recognition Partl:CharactersetOCR-A- Shapesand dimensionsoftheprinted image [ISOtitle:Alphanumeric charactersetsforoptical recognition Part l:Character set OCR-AShapesand dimensions of the printed image] UDC 681.327.12:681.3.04 + 003 BSi NOCOPYINGWTTHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAW BS5464-1:1977 Cooperating organizations The Data Processing Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Airways British Computer Society* British Paper and Board Industry Federation* British Printing Industry Federation* Business Equipment Trade Association* Civil ServiceDepartment-Central ComputerAgency* Committee of London Clearing Bankers* Department of Industry Department of Industry-National Physical Laboratory* Department of the Environment-Fire Research Station Electricity Supply Industry in England and Wales* Electronic EngineeringAssociation* Engineering EquipmentUsers Association* Government Communication Headquarters HM Customs and Excise Institute of Cost and Management Accountants Institute of Municipal Treasurers and Accountants (Incorporated) Institution of Electrical and Electronics Technician Engineers Institution of Electrical Engineers Institutionof Mechanical Engineers London Transport Executive Ministry of Defence National Coal Board* National Research Development Corporation Post Office* Societyof BritishAerospace Companies The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparationof this British Standard: HerMajesty's Stationery Office PIRAResearchAssociationforthePaperandBoard Printing andPackaging This British Standard, having Industries been prepared under the direction of the Data Production Engineering Research Association of Great Britain Processing Standards Committee,was published under the authority of the Amendments issued since publication Executive Board on 29 April 1977 Amd.No. Date ofissue Comments BSI 05-2000 The following BSI references relate to the work on this standard: Committee reference DPS/14 Draftforcomment75/73081 ISBN0580098214 BS 5464-1:1977 Contents Page Cooperating organizations Inside front cover Foreword ii 1 General 1 2 CharactersetOCR-A 2 3 Charactershapes and dimensions 3 4 Use ofthetableof values 4 5 Radiiand corners 5 6 Relativevertical position ofprinted characters 6 7 Relative horizontal position of printed characters 6 Table 1-OCR-Aprintingframe dimensions 3 Table 2 -Radii 4 Table3 OCR-Avalues 5 BSI05-2000 i