ch1 - An Introduction to Software Engineering Ian...

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©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 1 An Introduction to Software Engineering
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©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 2 Objectives To introduce software engineering and to explain its importance To set out the answers to key questions about software engineering To introduce ethical and professional issues and to explain why they are of concern to software engineers
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©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 3 Topics covered FAQs about software engineering Professional and ethical responsibility
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©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 4 Software engineering The economies of ALL developed nations are dependent on software. More and more systems are software controlled Software engineering is concerned with theories, methods and tools for professional software development. Expenditure on software represents a significant fraction of GNP in all developed countries.
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©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 5 Software costs Software costs often dominate computer system costs. The costs of software on a PC are often greater than the hardware cost. Software costs more to maintain than it does to develop. For systems with a long life, maintenance costs may be several times development costs. Software engineering is concerned with cost- effective software development.
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©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 6 FAQs about software engineering What is software? What is software engineering? What is the difference between software engineering and computer science? What is the difference between software engineering and system engineering? What is a software process? What is a software process model?
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©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 7 FAQs about software engineering What are the costs of software engineering? What are software engineering methods? What is CASE (Computer-Aided Software Engineering) What are the attributes of good software? What are the key challenges facing software engineering?
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Software Engineering, 7th edition. Chapter 1 Slide 8 What is software? Computer programs and associated documentation such as requirements, design models and user manuals. Software products may be developed for a particular customer or may be developed for a general market. Software products may be Generic - developed to be sold to a range of different customers e.g. PC software such as Excel or Word. Bespoke (custom) - developed for a single customer according to their specification. New software can be created by developing new
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ch1 - An Introduction to Software Engineering Ian...

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