SOFTWARE Engineering

Importance of Software Engineering and Software

• All developed countries rely on the economic software
• The more the system is controlled by the Software
• Software Engineering associated with the theory, methods and tools for the professional development of Software .
• Expenditure of funds for PL in the developed countries is very big.
• Software Price more often dominate computer system price. Software price of the PC is often more expensive than the price of the device severity.
• Cost of maintenance are more expensive than the Software cost pembuatannya.
• Software Engineering associated with the effective cost of making Software .

Do Software?

• computer programs and documentation related documents such as needs, design, and user manual.
• Software products can be built for specific users or the public:
• Generic - developed to be sold to users who are different - for example, Software for the PC as Excel or Word.
• Bespoke (custom) - for specific users / customers according to their needs.
• Software new, can be made with the new build program, the configuration system Software , or use again (reuse) programs that already exist.

Are Software Engineering?

• Discipline engineering or technical knowledge related to all aspects in making Software
• Software Engineering must follow a systematic and organized and use the tools and techniques that are suitable in accordance with the issues that will be solved, and the restriction of development resources available
• differences in Software Engineering and Computer Science?
• Science related to computer theory and basic concepts; Software Engineering practices related to the development of Software .
• Theory in computer science as it was less than Software Engineering.

differences in Software Engineering and System Engineering?

• Engineering system with all related aspects in the development of computer-based systems, including hardware, engineering and the Software process. Software Engineering is part of the engineering system that includes the development of Software , infrasktruktur, control, application and database on the system.
• The expert system (system engineers) are involved in system specification, architectural design, integration and launch.

What is Software Process?

• A series of activities which aim is the development or evolution of Software
• general activity in all the Software :
• Specification - what the limits of the system and development
• Development of production-system Software
• Validation - checking whether the Software in accordance with customer demand
• Evolution - changing to adjust the Software change request.

What software process model?
Simple illustration of the process of Software , based on certain views, such as:

• Workflow - a sequence of events;
• Data-flow - flow of information;
• Role / action - who did what.
• Model process, for example
• Waterfall;
• Iterative development;
• Component-based software engineering.

How much cost Software Engineering

• In 60% of the gross cost for development and 40% for testing. For custom-Software , the cost often exceeds the cost of the evolution of development ..
• Costs vary depending on the type of system that was built and the needs of the system such as performance and system reliability.
• Distribution costs depend on the model of development used.