Abstract: This paper describes small cash systems and the use of iButton® SHA devices, specifically, the DS1963S and DS1961S, as the electronically readable tokens in which the cash is stored. Two scenarios are presented. In scenario A, both the tokens and the coprocessor are DS1963S iButtons. In scenario B, the DS1963S functions as coprocessor in a system that uses the DS1961S as tokens or carriers of electronic cash. 你所查询的应用笔记提供Acrobat PDF格式： APPLICATION NOTE 1820:White Paper 1: SHA Devices Used in Small Cash Systems (PDF, 677kB) 免费Acrobat PDF阅读软件可从以下网站获得： http://chinese-s.adobe.com/products/acrobat/readstep2.html 相关型号   APP 1820: Dec 20, 2002 DS1961S 带有SHA-1引擎的1K位EEPROM iButton DS1963S SHA iButton DS2432 1Kb、保护型1-Wire EEPROM，带有SHA-1引擎 数据资料缩写本 (PDF, 272kB) 自动更新 需要自动接收最新发布的应用笔记吗？请订阅EE-Mail™ (English only)。 我们期待您的反馈！ 喜欢？不喜欢？有待改善？或为我们提供建议？请与我们联系 — 我们将根据您的意见或建议改善我们的工作。 网页评价或提供建议   下载，PDF格式 (677kB)  AN1820, AN 1820, APP1820, Appnote1820, Appnote 1820