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Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened between. As was discussed before, it was not until the 19th century that the newspaper became the dominant pre- electronic(61), following in the wake of the pamphlet and the book and in the(62)of the periodical. It was during the same time that the communications revolution(63)UP, beginning with transport, the railway, and leading on through the telegraph, the telephone, radio, and motion pictures into the 20th-century world of the motor car and the air plane. Not everyone sees that process in(64). It is important to do so. It is generally recognized,(65), that the introduction of the computer in the early 20th century,(66)by the invention of the integrated circuit during the 1960s, radically changed the process, although its impact on the media was not immediately(67). As time went by, computers became smaller and more powerful, and they became "personal" too, as well as(68), with display becoming sharper and storage(69)increasing. They were thought of, like people,(70)generations, with the distance between generations much(71). It was within the computer age that the term "information society" began to be widely used to describe the(72)within which we now live. The communications revolution has(73)both work and leisure and how we think and feel both about place and time, but there have been(74)view about its economic, political, social and cultural implications. "Benefits" have been weighed(75)"harmful" outcomes. And generalizations have proved difficult.
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Developingreliable software on time and within(66).represents a difficult endeavor for many organizations. Usually business solutions have three main aspects., people,(67), and technology. The maion reason for failing software projects has little to do with technology and tools, and much to do with lack of process(68). Experience has shown that introducing new technology and tools in an immature or undisciplined environment is likely to increase the chaos. CASE tools are not enough. "A fool with a tool is still a fool!" Structured method was the first wave of the software industry. This was the beginning of transforming software development from a"(69)industry" to mass production. Software process movement if the second wave in the software industry. The process maturity movement prepares the way for the third wave of the software industry:"software industrialization".Software development will become like an assembly and manufacturing process. A criticalenabling factor is a disciplined software engineering process with predictable quality,(70)and functionality.
Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened between. As was discussed before, it was not until the 19th century that the newspaper became the dominant pre- electronic(61), following in the wake of the pamphlet and the book and in the(62)of the periodical. It was during the same time that the communications revolution(63)UP, beginning with transport, the railway, and leading on through the telegraph, the telephone, radio, and motion pictures into the 20th-century world of the motor car and the air plane. Not everyone sees that process in(64). It is important to do so. It is generally recognized,(65), that the introduction of the computer in the early 20th century,(66)by the invention of the integrated circuit during the 1960s, radically changed the process, although its impact on the media was not immediately(67). As time went by, computers became smaller and more powerful, and they became "personal" too, as well as(68), with display becoming sharper and storage(69)increasing. They were thought of, like people,(70)generations, with the distance between generations much(71). It was within the computer age that the term "information society" began to be widely used to describe the(72)within which we now live. The communications revolution has(73)both work and leisure and how we think and feel both about place and time, but there have been(74)view about its economic, political, social and cultural implications. "Benefits" have been weighed(75)"harmful" outcomes. And generalizations have proved difficult.
软件开发模型用于指导软件开发。演化模型是在快速开发一个(28)的基础上，逐步演化成最终的软件。螺旋模型综合了(29)的优点，并增加了(30)。喷泉模型描述的是面向(31)的开发过程，反映了该开发过程的(32)特征。
(8)用使用实例(use case)来建立模型，并用它来描述来自终端用户方面的可用的场景。(9)对静态结构(类、对象和关系)模型化。(10)描述了在用户模型视图和结构模型视图中所描述的各种结构元素之间的交互和协作。(11)将系统的结构和行为表达成为易于转换为实现的方式。(12)示系统实现环境的结构和行为。
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