编码阶段的主要任务是把设计阶段所产生的设计结果翻译成计算机能够理解并执行的程序

Software is intangible Hard to understand development effort Software is easy to reproduce Cost is in its development —in other engineering products, manufacturing is the costly stage

The recurring aspects of designs are called design patterns. A pattern is the outline of a reusable solution to a general problem encountered in a particular context Many of them have been systematically documented for all software developersto use

Software engineers should avoid re-developing software already developed Types of reuse: Reuse of expertise Reuse of standard designs and algorithms

Procedural paradigm: Software is organized around the notion of procedures Procedural abstraction —Works as long as the data is simple Adding data abstractions —Groups together the pieces of data that describe some entity

Project management encompasses all the activities needed to plan and execute a project: Deciding what needs to be done Estimating costs Ensuring there are suitable people to undertake the project

7.1 User Centred Design Software development should focus on the needs of users Understand your users Design software based on an understanding of the users’tasks Ensure users are involved in decision making processes

一、软件质量概念 二、软件质量保证 三、软件可靠性 四、软件配置管理

一、软件测试的目的和原则 二、软件测试用例设 三、软件测试策略 四、软件测试种类 五、程序调试

一、结构化程序设计 二、程序设计风格 三、程序效率 四、程序复杂性度量