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有1、2、3、4个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？-1,2,3,4 there is a figure that can vary the composition of the number of duplicate and without the three-digit figure? How many are?

一个集文件查询与操作的综合原码 可以查询文件以及备份文件并且管理文件-a document inquiries integrated with the operation of the code can find the original documents of the backup file and document management

这是文件同步的简单代码；

类Excel（全部使用VB编写）-Excel category (all prepared using VB)

cselectdialogis，fromcfiledialogand类继承

一个类似于记事本的.net程序，实现了经典的文档视图模式即MVC模式，有很好的扩展性，可以作为学习.net的实例。-similar to the one in the notebook. Net program, realized the classic document view mode that MVC model, good scalability, can be used as learning. net examples.

从网上找到一些保存读取Ini文件的类，感觉不是很好用，于是作者自己动手写了一个简单的CIniFile类，保存程序的参数设置-From the Internet to find some preserved Ini file reader class, feeling not very good, and therefore the author to write yourself a simple CIniFile category, save the parameter setting procedures

从文本中提取DNA碱基序列，或删除文本中的空格和回车。-text extracted from the DNA sequence, or delete the text box and enter.

VB打开各种数据的方法,不要用Environment，直接添加DataReport。在细节中用RptTextBox控件按自己的打印要求布局。将其DataField属性对应相应的字段，注意不要设置DataMember-VB opened various kinds of data, not to use the Environment, direct DataReport added. The details RptTextBox controls used by the print layout requirements. Its DataField attribute with corresponding field, the attention should not erect DataMember

应用背景scoredown代码包含2个模块和测试模块1 Verilog。这是一个代码写入FPGA实现。输入按钮和开关，输出LED。 ；关键技术本文采用Verilog编码来实现电路的功能。