How software is developed, how to develop software

1. The first process of software development is the analysis and determination of the purpose of project development, mainly after the software developer determines the development project, it is necessary to discuss with the demander to determine the needs of the demander for software development, achieve the goals and the specific functions needed, etc., and determine whether it can be achieved;

2. The next step is the requirements analysis, which is also the stage to determine the specific ideas for the normal development of the software. Once it is determined that software development can be carried out, it is necessary to conduct a specific and detailed analysis of the functional requirements of the software that the customer needs to implement. At the same time, the changes that may occur in the development process should be considered, and the requirements change plan should be formulated to deal with the occurrence of special circumstances at any time to ensure the smooth progress of the software development process.

3. The next step is software design. Software design should design the framework structure, functional modules and databases of the software system according to the results of the analysis of software functional requirements in the previous stage. It is mainly divided into two parts: general design and detailed design;

4. The next step is the programming implementation step. Programming is also based on the software design, the requirements of each part of the software design through the computer program ** to achieve operation, programming system.

1. Standardized program writing rules to ensure that the software program is easy to understand and maintain;

5. The next step is the software testing step. That is, after the customer software needs to be programmed according to the design, that is, after the software program is completed, it is necessary to test the written program to form an overall architecture and function of the unit, assembly and system in three stages, so as to test the correctness of the program writing and the adequacy of the function of the customer demand, so as to determine whether the software meets the development requirements, and it is also a process of finding and correcting problems;

6. After the software development is completed through the above core links, the next step is to hand over the software system to the customer after the software development meets the customer's needs, and deliver the software installation program, database data dictionary, "user installation manual", "user guide", demand report, design report, test report and other products to the customer, and guide the customer to install the software, as well as installation skills, and remind the customer to pay attention to the detection and precautions of software operation, environment, server and related middleware. Know the actual operation method, use process and other issues of the customer's software, and realize the tasks specified in the contract;

7. After accepting the software development results delivered by the developer, and carrying out actual operation, test and operation, and achieving satisfactory results, the user will accept the developed software;

8. Custom-developed software usually needs to provide after-sales service, regularly maintain the software, or modify the application software program according to the new needs of users, so that it can continuously meet the actual needs of customers.

2. Then the project manager first controls the general direction and evaluates the project, such as how much risk, how much feasibility, how much cost budget and analysis of the same type of products in the market. It is also necessary to understand the user's feelings about the competing app and the demand for slag. Determine the type of customer and hidden users that the app is targeting, the market share, and the functions that need to be implemented.

3. The product manager comes on the field, conducts user research, makes user portraits, and defines user labels. Then carry out requirements analysis, functional design, interaction design, process design, determine the project framework, output requirements documents and product prototype drawings, and hand them over to UI engineers.

4. The UI designs, renders, and subdivides the product prototype diagram, and outputs the page design diagram, page coordinate diagram and tiled diagram.

5. Developers start to write according to the requirements document, product prototype drawings and page design drawings. Front-end development (Android and iOS) is responsible for front-end page layout, interface processing, and local logic writing. The back-end developer is responsible for database design, writing and docking with the front-end interface.

6. The tester writes the test case according to the requirements, and the developer modifies the program bug until the exception is all processed and begins to prepare for the shelf.

<> developing a software program can follow these steps:1Clarify the requirements:

Determine what functions the software program you want to develop needs to implement and what the needs of the users are. 2.Planning Software Design:

According to the demand analysis, formulate the software design plan, including functional module design, technology selection, etc. 3.Write a program**:

According to the planned software design, the software program should be written to pay attention to the maintainability and scalability. 4.Test Software Programs:

Initially developed software programs need to be tested to test their functionality and performance in different environments. 5.Modify the program**:

Based on the test results, the software program is modified and optimized as necessary. 6.Release of software programs:

After testing and modification, the software program is released to the users of the vertical family, and the services are provided for users and use. 7.Maintain and update software programs:

Continuously follow up on user feedback and market demand, update and maintain software programs, and improve the performance and functionality of software programs.

The overall definition of the problem to be solved, including understanding the user's requirements and the actual environment, from the technical, economic and social aspects of dust and dust and other three aspects of research and demonstration of the feasibility of the software project, the preparation of a feasibility study report, the solution to the problem, and the available resources (such as computer hardware, system software, manpower, etc.) cost, can be achieved and the development progress of the estimate, the development of the implementation plan to complete the development task.

2. Analyze filial piety.

Software requirements analysis is the analysis and assumption of a system for what kind of software to develop. It is a process of extracting the user's needs, removing the false and retaining the true, correctly understanding, and then expressing them in the software engineering development language (formal and functional specifications, i.e., requirements specifications). The basic task of this stage is to determine the problem to be solved together with the user, establish the logical model of the software, write the requirements specification document and finally get the user's approval.

The main methods of requirements analysis are structured analysis methods, data flow diagrams, and data dictionaries. The work of this stage is to design and establish the architecture of the corresponding software system according to the requirements of the requirements specification, and decompose the whole system into several subsystems or modules, define the interface relationship between subsystems or modules, define the specific design of each subsystem, and write the software outline design and detailed design specification, database or data structure design specification, and assembly test plan. In the initial stages of any software or system development, it is important to have a complete understanding of the user's needs in order to prioritize which features should be implemented, what specifications should be adopted, and which constraints should be set in the system development process that follows.

The system engineer will ultimately complete the design based on which the subsequent program development, description and limitations of the system's functions and performance will be defined.