-
During initial days of computing, software was largely developed by small groups of people. When this software was to be maintained by another set of people, it used to be a nightmarish experience. When large commercial projects were to be handled, it used to be analmost impossible task to keep the time and budget under control, and projects used to get delayed and many projects were abandoned halfway. There was no systematic procedure forthe software development; everything was done on ad hoc basis. This ad hoc approach led tothe 'software crisis'.Over the last few decades there has been a tremendous growth in information technologyand its impact on everyday life. Complex software systems have become critical to theoperation of many systems in areas such as banking, communications, manufacturing,power generation, and transportation. Progress in computer science and accumulated experience with industrial production of software have led to the emergence of software engineering as a separate discipline. The software engineering discipline has been defined as"the application of systematic, disciplined, quantifiable approaches to the development,operation, and maintenance of software. " that is, the application of engineering to software .The computer science discipline concerns with developing large applications. Software engineering covers not only the technical aspects of building software systems, but also management issues, such as directing programming teams, scheduling, and budgeting.For developing a software product, the development process is divided into differentstages. A convenient way of splitting the whole process is to divide the development into thefollowing five stages:Requirements Analysis & Specification: define the system requirements in detailDesign: specify system architecture and modules in detailCoding: produce source codeTesting: deal with unit testing and system testingMaintenance: fix bugs, enhance features and adapt across platforms.{二)Tell whether the following statements are true (T ) or false ( F) according to the passage A.(根据上立的内容判断下列句子的正误。 )36. During initial days of the development of software, everything was done in discipline. ( )37. The definition of software engineering is "the application of systematic, disciplined,quantifiable approaches to the development, operation, and maintenance of software. " ( )38. For developing a software product, you need design, coding and testing. ( )39. software engineering is the application of engineering to software. ( )40. Software engineering only covers the technical aspects of building software systems. ( ) .
-
在冬季修补橡皮艇时,室温应在()最好。
-
热固化型基托树脂填胶的最佳时期为()。
-
承运人签发不清洁提单,表明()。
-
在发展的初期阶段,世界博览会成为记录和传播()的平台,使人类社会迈入了一个新的时期。
-
一个传递函数可以可以用一个输入对多个输出的关系。()
-
知觉是影响消费者行为的重要因素,其特征包括()
-
手术见肝有一肿物,无明显境界,颜色暗红,切开呈筛孔状结构,有许多红褐色液体流出,取材镜检,见多量管腔,管壁厚薄不均,并扩张迂曲,管腔内有多量红细胞。此瘤可诊断为()。
-
控制汽温的主要手段?
-
分馏法原油稳定装置中,当压力升高时,要保持塔顶产品组成不变,应()。