Decomposition and Abstraction

• Decomposition is the process of breaking down complex problems into smaller and more manageable parts.
• Abstraction involves removing unnecessary details to focus on important details of a problem or system.
• What can computers be used to solve?

  Problems
• What does computational thinking enable us to do?

   It allows us to take a complex problem, understand what the problem is and develop possible solutions.
• What is logical reasoning?

  Programmers being able to work out exactly what to tell the computer to do.
• How might you decompose the complex problem of how to create an app?

  Think about:

  • what your app will look like
  • who are the target audience for your app
  • how will you sell your app
  • how will you promote the app
• What are subprograms?


  small programs that are written within a larger, main program designed to carry out a specific task
• What are the two types of subprograms/subroutines?

  Functions and Procedures
• Benefits of subprograms?


   easy to write and debug

  able to be used repeatedly throughout main program

  only need to be written once