数字编码 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.情境引入问题：你知道邮政编码和身份证号码中的数字或字母表示的含义吗？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（一）阅读交流，了解邮政编码信息问题：读一读，说一说知道了什么。扩展：邮政编码是现代分拣信件的一种措施， 你们知道是从什么时候开始使用它的吗？我们来看 一个小历史。新知探究Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.二、了解编码信息，体会作用（一）阅读交流，了解邮政编码信息问题：读一读，互相说一说知道了什么。中国于1974年开始研制邮政编码，经过5年左右的 时间，拟定出全国邮政编码试行方案，于1978年 在辽宁、上海、江苏等省市进行试点。1980年7月1日开始正式在全国宣传、推行。1987年施行的中华人民共和国邮政法明确规 定寄递邮件实行邮政编码。新知探究Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.36*198505112677 44*197502198379 37*197806180866 36*199004136966 11*20050311318X（二）联系实际，了解身份证编码信息问题：关于身份证号码，你都知道些什么？生日码性别新知探究Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（三）联系实际，了解其他编码信息问题：生活中还有哪些数字编码？ 你知道这些编码包含的信息吗？都是110，意思一样吗？新知探究Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.问题：你们有什么想法？互相说一说。 实践：按照刚才说的，小组合作试试吧！试试看，给学校的每名 学生编一个学号。学号中要包含哪些信息呢？知识应用Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.实践：生活中还有哪些编码？请你查找并了解相应的信息。布置作业Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.