ISO/IEC INTERNATIONAL STANDARD 15412 First edition 1999-09-15 Information technology Portable computer keyboard layouts Technologies de I'information - Dispositions de clavier pour ordinateur portable IEC Referencenumber ISO/IEC15412:1999(E) by IHS under lic itted without license from IHS Not for Resale ISO/IEC 15412:1999(E) Contents 1 Scope 2 Conformance. 3 Normative referenc 4Definitions. 5 Layout requirements 5.1 Alphanumeric section 5.2 Numeric section... 5.3 Editing section 5.3.1 Editing keys. 5.3.2 Cursor control.. 5.4 Function section 5.4.1 Escape key 6 Physical requirements.. 6.1 Key legend size Annex A (informative) Design guidelines related to keyboards for portable computers.... A.1 Cursor control and pointing device. A.2 Escape keys. A.3 Flexibility. A.4 Keying noise A.5Portablecontrols @ISO/IEC1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic ISO/IEC Copyright Office ·Case postale 56· CH-1211Geneve 20·Switzerland Printed in Switzerland Copyright International Organization for Standardization Not for Resal @ ISO/IEC ISO/IEC15412:1999(E) Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of IsO or IEC participate in the development of International Standards through technical committees established by the respective organizationto deal with particular fields of technical activity.IsO andIEC technical committees liaison with ISO and IEC, also take part in the work. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote technology, Subcommittee SC 35, User interfaces Annex A of this International Standard is for information only. ii Not for Resale