数字电路模拟技术讲义(pdf 54页)(英文版)

数字电路模拟技术讲义内容简介：
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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 IECparticipate in the development of International Standards through technical committees established by therespective organization to deal with particular fields of technical activity. ISO and IEC technical committeescollaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in
liaison with ISO and IEC, also take part in the work.
International Standards are drafted in accordance with the rules given in the ISO/IEC 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.
Attention is drawn to the possibility that some of the elements of this part of ISO/IEC 14443 may be the subject ofpatent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.International Standard ISO/IEC 14443-3 was prepared by Joint Technical Committee ISO/IEC JTC 1, Informationtechnology, Subcommittee SC 17, Identification cards and related devices.
ISO/IEC 14443 consists of the following parts, under the general title Identification cards — Contactless integratedcircuit(s) cards - Proximity cards:
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