Design of High-Speed Data Collection System Based on USB2.0 and FPGA technology
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Source: Electronic Technology Application Author: Yuan Jiangnan
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In recent years, laptop computers have been rapidly popularized and updated, most of which do not have RS232 interfaces configured, and USB interfaces have become the mainstream of PC and peripheral interfaces
11.1 What to do first11.2 Error AnalysisError measurement for class 11.3 skew11.4 The tradeoff between recall and precision11.5 Machine-Learning data11.1 what to do firstThe next video will talk about the design of the machine learning system. These videos will talk about the major problems you will encounter when designing a complex machine learning system. Also
Database Design refers to the process of designing the database structure according to user requirements. Specifically, database design refers to constructing the optimal database mode under the guidance of the theory of relational database for a given application environment, create a database and its Application System on the database management
Database System life cycleThe development of database application system is a software engineering, generally has the information collection, the organization, the processing, the extraction, the synthesis, the dissemination and so on function, but has own characteristic, therefore is called the database project . Database application system from the beginning of
+ +, the external invocation of the function of CORBA, the long-time CRM system using Delphi to write, the same use CORBA publishing call function, and the last two years the enterprise has just a CRM system using the C # language for an upgrade, However, due to the design of the data storage layer, and did not cut all the old
scale, the test workload is also very large.Finally, all work participants associated with the removal of a feature in the downline are not able to bring any substantial benefitsThe opposite is that it is only possible to bring risk.As a result of these factors, few companies can have a well-developed project (or function) downline mechanism, there are few publicCan be done in a timely manner to the system some inappropriate functions offline. As a r
basic framework (two layers development)
Create a Windows desktop application-' Student management system '
Add entity Class Library modelsRight-add-new project-Class library
Add Data Access Class Dal
Basic Framework Directory:
To habitually modify the name of the main form, generally with frmmainor follow the name given by the customer
Adding references
The data access layer needs to refer to the entity class, and the Windowform main program nee
Label:In the process of optimizing the application of the database class, we learned a principle that the thought should be grabbed from the structure design, in the following order:1. Database logical structure design and physical design.2. Database object Deployment and SQL code authoring.3. Database instance performance tuning and optimization.4. Operating
Design-related implementation techniques
1, the design of the typical data table
In the receiving document management system, any in-receipt or dispatch file corresponds to a default process (already defined beforehand), the file follows the steps specified in the process to flow down successively. Take a process as an example: in-place registration-〉 director
to design a review schematic at any time based on these principles, including:A) digital power supply and analog power supply are separated.B) digital ground and analog ground separation, single point of ground, digital ground can be directly connected to the shell (EARTH), the chassis must be grounded to protect the personal safety.C) Ensure that resources in each module of the system cannot conflict. For
Wit-capp is "product data-based, interactive design as a means, process knowledge base as the core, the realization of enterprise information integration as the goal, product-oriented process design and management" Application mode, standardize the process of enterprises, improve process design efficiency and standardization, improve the level of process manageme
Case: A simple sales system
From now on, we will take a simple sales system as an example to explore the application of entityframework in the field-driven design. To facilitate discussion, our sales system is very simple and does not involve customers having multiple delivery addresses or any inventory management con
This paper introduces some techniques to improve the performance of the system, such as column segmentation, row segmentation, instance segmentation and physical storage segmentation.
This article mainly explains the design of the database, because a good data structure, the overall system operation is too important, please look at the content of this article.Ref
Any system needs people's participation at present, the electrical business system needs customers, enterprise system needs employees, unattended systems also need operators.
So in the business object, people are a necessary design object, whether or not the core business object
Person table
Field name type role ID int
Design of Vehicle Navigation System Based on ARM9-Linux platform 14:26:33
1. PrefaceNearOver the past few years, with the rapid development of the national economy and the increasing living standard of the people, the number of motor vehicles has increased dramatically and the demand for vehicle navigation systems has also increased dramatically. This article usesARM9-Linux platform embedded
When I was talking to my friends, I mentioned the idea that the core of all frame-level design is navigation design. More recently see a foreign peer proposed "80% availability is the navigation!" "Because good navigation ensures that users can find any information." That is, providing the possibility of arrival is much more important than how it can be reached.
I am accustomed to the navigation is divided
, server-side software, and set-top box hardware. The system is designed for the demand of the Chinese users and small and medium sized networks for the broadband Information Service, the system is based on the Browser/applicationserver/databaseserver model, and the Internet technology is used as the basis of the information service. Through the design and realiz
Oracle is recognized as the most secure database system. Enterprise-level Oracle database application systems include system hardware, operating systems, network layers, and DBMS database management systems), applications, and data. Each part is mutually dependent, each part must be properly configured, designed, and optimized to achieve a high-performance database syst
Design News Information Management system
This program uses asp+access. This system can first try
(please visit http://www.whyxy.com/yooo120/infosystem/), if satisfied, please write to: tangzehuan@sohu.com get the source code. Also want to take the opportunity to communicate with fellow colleagues, my qq:37878073
Function Description:
1. Use ACCESS2000 Small
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