fww4022的专栏

软件工程讲义双语，主要知识点总结。 Chapter 1 (1) Introduction  Getting started with software engineering 1.1 Objectives 1. To introduce software engineering and to explain its importance 2. To set out the answers to key questions about software engineering 3. To introduce ethical and professional issues and to explain why they are of concern to software engineers 1.2 Topics covered 1. FAQs about software engineering 2. Professional and ethical responsibility 1.3 Importance of Software engineering  The economies of ALL developed nations are dependent on software.  More and more systems are software controlled  Expenditure on software represents a significant fraction of GNP (gross National product) in all developed countries.( GNP与GDP的关系是：GNP等于GDP加上本国投在国外的资本和劳务的收入再减去外国投在本国的资本和劳务的收入。)  Software costs often dominate computer system costs. The costs of software on a PC are often greater than the hardware cost.  Software engineering is concerned with cost-effective software development