1、ANSI INCITS X4.6-1979 (R2003)(formerly ANSI X4.6-1979)for 10-key Keyboard for Adding and Calculating MachinesCopyright 1979 by Information Technology Industry Council (ITI). All rights reserved.These materials are subject to copyright claims of International Standardization Organization (ISO), Ameri
2、can National Standards Institute (ANSI), and Information Technology Industry Council (ITI).Not for resale. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of ITI. All requests pertaining to this standardshould
3、be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005.Copyright 1979 by Information Technology Industry Council (ITI). All rights reserved.No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of ITI, 1250 Eye Street NW,Washington, DC 20005.
