people are good at understanding things in an intuitive and simple way. I firmly believe that, all excellent solutions are intuitive and simple. I like intuitive and simple solutions. Maybe before finding an intuitive and simple solution, we have tried to solve the problem in many complicated and confusing ways. If you
has only one instance and provides a global access point to access it. Status mode (state ): Allows an object to change its behavior when its internal state changes. The object appears to have modified the class it belongs to. Strategy mode (strategy): Define a series of algorithms, encapsulate them one by one, and make them interchangeable with each other. This mode allows the algorithm to be changed independently of the customer using it. Template method: Defines the skeleton of an algorit
candle. In the software Design "save" 1 hours, may let you invest in the future more than doubled project time, the more the duration is tight, the more need to think calmly the design of software, the appropriate design can greatly reduce the project workload, so that your
is much better than the theory of Large sections in those textbooks. If you have no idea much about software design, let's take a look at it.
Chapter 2: Describes. which components or modules use the design pattern in the. NET Framework, and explain these design patterns through the introduction. the
Changes are inevitable. No matter how much you appreciate your software. It may change tomorrow, and it may be difficult to change. This will be reflected in the customer's demand changes. In this chapter, visit an old friend to improve the existing system, and see how to solve large problems with less changes.
Do you still remember the boss of the guitar store? We developed a guitar query system. As the business grows better, he wants to start man
How do we know the advantages and disadvantages of software design? Below are some symptoms of poor design. when any of the following smells of the software, it indicates that the software is corrupt.
Rigidity: it is difficult to make changes to the system, because e
Software Design: What is software design?
"Wow, design !"
Whenever you talk about this word, will your mind soon pop up with "genius", "inspiration", "creativity "...... In terms of words, some big and round black-rimmed glasses appear simultaneously, while walking up and do
of EdtFirstNumber User types inEnter the second number EdtSecondNumber User types inSum EdtResult OnClickProgram exit BtnExit OnClickAs you have seen in the previous example, this correctly shows what to execute, who to execute, and when to execute.
ConclusionAs you said at the beginning, "you must know where you want to get everything" and follow a specific path or method to give you the confidence you need to implement the system you are trying to develop. There are many ways to follow. here
easy to create, at least mechanically. Generally, writing (that is, designing) a representative software module (50 to 100 lines of code) takes only a few days (fully debugging it is another topic, it will be discussed later ). I would like to ask if there are any other disciplines that can generate designs with the same complexity as the software in such a short period of time. However, first, we must fig
Based on business needs so that future software can meet customers' needs. Non-functional requirements define some performance and efficiency constraints and rules. Our technical architecture must meet these constraints and rules. The change case is an estimation of future changes. In combination with functional and non-functional requirements, we can determine the scope of a requirement and then determine the scope of a framework. (From Lin xing)Her
To develop a user-satisfied software is not easy, the software architect must fully grasp the various requirements, balance the need for potential contradictions between the needs of different categories to meet. From the understanding of the complexity of requirements, this paper demonstrates how to design the architecture of different requirements through RUP's
Abstract:
The database is the foundation of the system. If you need to change the fields of the database frequently, or even modify the table and table relationship, I believe that no one will be able to cope with it several times! Because of the changes in the database structure, not only the changes in the database itself, but also the code at the entity, data operation, logic, and performance layers must be modified. What's more troublesome is that if a large amount of old data already exist
One, Test Cases is the core of software testing.
The importance of software testing is beyond doubt. But how to complete the test in the shortest time with the least manpower and resources, discover the flaw of the software system, guarantee the good quality of the software, it is the goal that the
powerful integrated tool in the industry, plusTry to optimize the function)Synplify Pro v9.2.2 Linux 1CDSynplify v8.5 with Identify v2.3.2 Linux 1CDSynplify ASIC v5.02 for Win Linux Sun Unix 1CDTaurus Medici vV-2003.12 Linux 1CDVirtio VPAI 2.0 Platform 1CD Bosch Rexroth Group Products:Bosch.rexroth.indraworks.v7.04-iso 3CD (a simple and easy-to-operate engineering environment for the powerful electronic control system and drive system)BOSCH.REXROT
diagrams, state diagrams, activity diagrams and so on to represent a variety of dynamic behavior.) However, during the study of Fielding's doctoral dissertation, the UML specification has not been completely stabilized. )
Among all the software architecture researchers, fielding first proposed a very important concept of the architecture style of the software, and considered the
reflected in the system in a timely manner. The interaction between students and enterprises is not timely. The user's function is less and more simple, can be perfected and extended.In coding, the design of the algorithm is simple, and not rigorous, there are some flaws.Debugging over writing more simple, fewer cases
Personal contributionsFamiliar with the function of each component of the test chamber and the Connection Assembly test chamberFirst, the contents of the experimentStudy the connection of the serial port and USB cable of the experiment boxSecond, practice step 1, open the experimental box, first understand the function of each component
This is the LTE module, also known as 4G module, the specific role is the hardware will be RF, baseband integrated in a
XP emphasizes a simple design principle: the functions that can be implemented using arrays are never linked lists. In other agile methods, simple principles are repeatedly emphasized. In this chapter, we have a comprehensive understanding of simplicity. Context To what extent should the architecture be designed? Problem The
secondary If bandwidth, output DC elimination, and gain can be automatically optimized during the receiving process.
DC cancellation is mainly for the receiver's second-intermediate frequency converter offset drift and phase drift to form a Low-Frequency Impedance band. It can be adjusted through the point balance between the zero and the two sides in the statistical sample set.
Gain affects the receiving effect by quantizing the position of the step. After the reference inheritance settings o
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