Smartphone Software Development

The Modern Smartphone

• Smartphones serve multiple purposes, including work, social networking, and internet banking
• Research indicates smartphones significantly improved lives compared to previous years
• Software complexity is a major factor in smartphone development
• Smartphone software can be composed of around 10 million lines of code

Software Development Dynamics

• Development cycle times are shortening due to the need to reflect customer requirements
• The quality of human resources is the key factor in software development
• Unlike hardware development, simply adding more human resources doesn't guarantee better results in software development
• Talented developers can achieve great quality with fewer lines of code
• Well-made software performs well on lower specification hardware, reducing production costs
• Software is intangible and easily reproducible, influencing trends like open-source software adoption
• Linux maintains a strong position as a key open-source software due to its cost-free benefit

Software Engineering Essentials

• Software engineering applies engineering principles to software development
• The key elements of software engineering are: method, tool, human resources, and process
• These four elements facilitate the production of high-quality software within schedule
• Software engineering methods include project planning, system analysis, data structures, coding, testing, and maintenance
• Software engineering also adopts language-specific, graph notation and software quality evaluation methods
• Tools in software engineering automate or semi-automate methods in the software development life cycle
• Requirement management, modeling, and configuration management are examples of software engineering tools
• An integrated combination of software engineering tools is considered a software engineering environment
• Process defines the order in which work is carried out, combining method and tool
• A software engineering process defines sequences, results, quality assurance, and milestones
• Software engineering has a high dependency on human resources
• Software development is hard to fully organize by following engineering principles alone

Software Life Cycle

• The software life cycle encompasses comprehension of the user environment and problems through development, maintenance, and operation
• The selection of a life cycle model is a critical activity for project tailoring
• Selecting life cycle models should be implemented with an understanding of risk and uncertainty
• The goal of selecting a life cycle model is to minimize risk or uncertainty
• V-model, V with prototype model, evolutionary model, and incremental model are examples of life cycle models
• Considering risks like requirements, technology, schedule, complexity, and reuse is important when selecting a software life cycle

Software Development Activities

• Software development activities include requirements analysis, design, implementation, and testing
• Requirements analysis involves understanding customer requirements and reduces development costs
• Software design involves inner structure and data structure of the software
• System design defines system structure and allocates subsystems to hardware or software
• Software implementation aims to execute programming that satisfies requirements based on design specifications
• Choosing a coding standard is crucial during implementation, and code should adhere to it

Software Testing

• Software testing is the final step for software quality assurance
• Software testing identifies defects and ensures quality through assessment and modifications

Software Management

• Software management supports software development, addressing problems, ensuring traceability, integrity, and project visibility
• The four types of software management activities are: software maintenance, requirement, configuration, and quality management
• Software maintenance management adapts and prepares for changes during customer use
• Software requirement management extracts, documents, and agrees on project stakeholders' requirements
• Software configuration management manages artifacts from software development phases to achieve high-quality software through change control
• Software quality management verifies whether software development aligns with the project plan and organizational policy

Software Quality

• Software quality management involves consideration of software quality characteristics
• Attributes of software quality are difficult to classify universally due to the variety of software with different purposes
• Selecting and applying suitable quality attributes based on specific needs is crucial
• Proper verification activity is essential for ensuring software quality