这是示意图（ORCAD）和PCB（PowerPCB）文件，es6461数字面板等。

图书管理 1.将各个项目子目录拷贝到硬盘上，然后可以用Visual Basic打开程序。 2.在每个项目子目录里面的sql目录里，将后缀.sql的文件打开后，拷贝到SQL Server 2000的查询分析器里。然后执行将产生需要的数据库结构。-management of a library. All projects will subdirectory copy to the hard drive, which can then be opened in Visual Basic procedures. 2. Each item inside the subdirectory sql directory of extensions. Sql open the document, copies of SQL Server 2000 inquiries analyzer Lane. Then needs arising from the implementation of the database structure.

mouse interface related work

垃圾压缩车的发展-The development of compressed garbage truck

出租车计费系统，可通过修改数据改变计费价格及起步里程.-Taxi billing system can be changed by modifying the data on prices and start charging mileage.

简易心电图仪设计,可测量人体心电信号并在示波器上显示出来-Simple Electrocardiograph design, measurable human ECG and oscilloscope display

顺序图和状态图被用来描述系统组建的特征，本来提出一种基于顺序图和状态图的协调性模型，用来更好得保证系统的时间特性。-sequence map and the state plan to be used to describe the characteristics of the formation system, originally proposed a plan based on the order of the state plan and the coordination model, used to guarantee better in the time characteristics.

another avr core porocesssor vhdl source code

circuits, design of three phase 12 pulse converter. it is very useful for improving the power factor.-circuits, design of three phase 12 pulse converter. it is very useful for improving the power factor.

学生成绩管理工作是学校学生管理工作的重要组成部分，现在相当一部分学校的学生成绩管理工作仍沿用手工方式。随着学校规模的扩大、学生人数的增加，效率低下、容易出错的手工方式越来越不适应实际管理工作的需要，按照软件工程原理和数据库技术开发学生成绩管理系统已成为学生管理部门的迫切需要。-student performance management is the management school students an important component, considerable part of the school management of student achievement is still used manual. With the increased scale of the schools, the number of students increases, inefficient and error-prone manual increasingly unable to meet the actual needs of management, in accordance with principles of software engineering and database technology student performance management systems have become students of management an urgent need.

USB 1.1 协议详简，对做usb 开发的 可以好好看看。 -USB 1.1 protocol detailed briefing on the development of the so usb be a good look.