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1.1 Collaboration in Computing
Importance of Collaboration
- Enhances Computing Innovations: Involving multiple perspectives leads to more robust, inclusive, and effective solutions.
- Reduces Bias: A diverse team helps identify and mitigate potential biases in technology.
- Improves Problem-Solving: Collaboration fosters creative solutions and better decision-making.
- Physical Innovations: Self-driving cars, smart home devices.
- Software Innovations: Picture editing applications, AI chatbots.
- Conceptual Innovations: E-commerce platforms, blockchain.
Methods of Collaboration
- User Consultation: Gathering user input to develop user-friendly programs.
- Online Collaboration Tools: Platforms like GitHub, Google Docs, and Slack facilitate teamwork.
- Pair Programming: Two programmers working together to enhance efficiency and reduce errors.
- Interpersonal Skills: Effective communication, consensus building, conflict resolution, and negotiation improve teamwork.
1.2 Program Function and Purpose
Enduring Understanding
- Iterative design, user-focused, feedback cycles, experimentation
Purpose of Computing Innovation
- Solve problems, creative expression
- Understanding purpose improves development
Program and Code Function
- Program = collection of statements performing a task (software)
- Code segment = part of a program
- Programs handle various inputs and situations
- Behavior = how a program runs, user interaction
- Programs described by what they do and how they do it
- Data sent for processing (tactile, audio, visual, text)
- Events provide input (key press, mouse click)
- Events trigger execution (program start, user action)
- Inputs influence program output
- Event-driven programming executes statements when triggered
- Input sources: user, other programs
Outputs
- Data sent to a device (tactile, audio, visual, text)
- Outputs depend on input or internal state
Skills
- Investigate situation, context, task
- Generalize data through variables
- Explain code function
1.3 Program Design and Development
Enduring Understanding
- Iterative design, user-focused, feedback cycles, experimentation
Development Process
- Ordered or exploratory approach
- Common phases:
- Investigating and reflecting
- Designing
- Prototyping
- Testing
- Iterative process: refinement based on feedback
- Incremental process: breaking problems into smaller parts
Program Design
- Investigate requirements and constraints
- Methods: surveys, user testing, interviews, observations
- Program specification defines requirements
- Design phase includes:
- Brainstorming
- Planning and storyboarding
- Organizing into modules and components
- Creating UI layout diagrams
- Developing a testing strategy
Program Documentation
- Written description of function and development process
- Comments explain code but do not affect execution
- Document throughout development
- Helps maintain correct programs, especially in collaboration
Acknowledging Sources
- Credit for code from others or collaborative efforts
- Acknowledgment in documentation with author/source
1.4 Identifying and Correcting Errors
Enduring Understanding
- Iterative design, feedback cycles, experimentation
Types of Errors
- Logic Error: Incorrect or unexpected behavior
- Syntax Error: Violates programming language rules
- Run-time Error: Occurs during execution, language-specific
- Overflow Error: Number exceeds defined range
Error Detection and Correction
- Methods:
- Test cases
- Hand tracing
- Visualizations
- Debuggers
- Extra output statements
Testing and Validation
- Defined Inputs: Ensure expected outcomes
- Edge Cases: Minimum and maximum values
- Testing Results: Guide revisions and improvements