Software Engineering For Students: A Programming Approach Part 27 doc

... that they can be mass-produced and therefore can be made cheaply, whereas software checks are tailor-made and may be expensive to develop. Additionally, checks carried out by hardware may not affect ... matter how much the software is damaged by a fault? – after all it is merely code in a memory that can easily be re-loaded. The answer is “yes” for two reasons. First, the damage cau...

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... 0 321 26 127 5 British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library Library of Congress Cataloging-in-Publication Data Bell, ... Page ii Software Engineering for Students BELL _A0 1.QXD 2/2/05 3:20 PM Page i Software Engineering for Students A Programming Approach Fourth Edition DOUGLAS BELL BELL _A0 1.Q...

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... as appropriate within the text as a graphi- cal design notation. Some other graphical notations – flowcharts, structure charts and data flow diagrams are also used. Java is used as an illustrative ... software is software that helps perform some directly useful or enjoyable task. Examples are games, the software for automatic teller machines (ATMs), the control software in an airp...

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... Arguably, as hardware becomes available to make previously impractical software projects feasible, software costs can only continue to escalate. In summary, what we see today is that software ... often as software. Although this is grounds for friendly rivalry between software and hardware designers, it can be no grounds for com- placency among software people. There are partic...

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... command line interface. For example, a number of applications provide a macro facility, in which a series of commands can be grouped together, parameterized and invoked as a single command. Again ... manipulation interface may be the most suitable approach. But an experienced and frequent user may be frustrated by an interface designed for novices and may prefer shortcut commands...

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... Further reading 65 5.5 Design a user interface for a mobile phone. Design suitable buttons and assume that a small display is available as part of the phone. Make assumptions about the tasks that users ... the facilities provided in the available programming language and operating system. 6.1 ● Introduction CHAPTER 6 Modularity This chapter explains: ■ the reasons for modularit...

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... of interaction is available in some programming languages and most oper- ating systems. Within the Java library, the classes java.io.PipedInputStream and java.io.PipedOutputStream allow a producer ... important? 6.2 Argue for and against restricting components to about seven statements. 6.3 Look at the way that the library methods are called within a library available to you – say th...

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... Chapter 9 ■ Data flow design read data convert check display message message data safe limits status information converted data raw data conversion factors Figure 9.3 Data flow diagram for patient ... between data flows and modularity 2. the idea of an idealized software structure. The first concerns the data flow diagram. Why exactly do we draw a data flow diagram and what is its signi...

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... classes: 1. classes that handle the user interface 2. classes that access the database 3. classes that handle the central logic of the program. We create three packages, named gui, database and ... implementing an interface can specify in the heading of the class that a particular interface is being implemented. For example, in Java: class Stack implements StackInterface Notice that the...

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... consists of a repeated cycle of small steps designed to assess and deal with risks at every cycle. Thus the spiral model is termed an iterative approach. 22.1 You are preparing a meal for special guests. ... decision as to which minimal-risk approach to use depends on factors that are peculiar to the organization, such as the availability of appropriate people. Writing the driver in...

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