2.1

• What is the main topic discussed in the first video of the series?

  The nature of abstraction
• How is abstraction defined in the video?


  Abstraction is the process of separating ideas from reality by hiding unnecessary details.
• What is an example of abstraction provided in the video?


  An abstract painting of a mountain landscape.
• What methods are mentioned as part of abstraction in computer systems design?


  Symbols, legends, color coding, and use of icons.
• How do icons relate to abstraction?


  Icons suggest a function or process in a simple and familiar way.
• What is the significance of the three images of a cat shown in the video?

  They illustrate different levels of abstraction.
• What example is used to explain abstraction in the series of videos?


  Different map styles of London.
• What is procedural abstraction?


  It abstracts the actual data values used in a computation as part of a computational pattern.
• How is procedural abstraction represented in an example?


  As $a +$$b =$$c$ instead of $1 +$$2 =$$3$.
• What is functional abstraction?


  It disregards the internal computational method and focuses only on inputs and outputs.
• What does data abstraction isolate?


  How a compound data object is used from its internal workings.
• What is problem abstraction or reduction?


  It involves removing details from a problem until it can be represented in a solvable way.
• How does the video describe the relationship between abstraction and computer science?


  Abstraction has specific sub-categories in computer science, each with its own purpose.
• What are the different forms of abstraction in computer science mentioned in the video?


  • Procedural abstraction
  • Functional abstraction
  • Data abstraction
  • Problem abstraction
• What is the key question you should be able to answer after watching the video?


  What do we mean by the term abstraction?
• What is the purpose of the downloadable cheat sheet mentioned in the video?

  • To help understand computational thinking
  • Contains a basic poster of the five strands
  • Detailed explanation on the back
• What is the significance of abstraction in everyday life as mentioned in the video?


  • Abstraction is not confined to computer science.
  • It is used in various forms like art and maps.
  • It helps simplify complex ideas.
• Computing has been used since ancient times with abacus being one of the earliest known computing devices
• Computers are used as tools for solving problems that can be expressed algorithmically
• Computers are used as tools for solving problems that can be expressed algorithmically
• The term computer science was coined by Alan Turing, who also developed the first electronic digital computers
• Stacks follow the Last In First Out (LIFO) principle, where the last element added is the first one to be removed.
• Stacks follow the Last In First Out (LIFO) principle, where the last element added is the first one to be removed.
• Stacks follow the Last In First Out (LIFO) principle, where the last element added is the first one to be removed.
• Linked lists consist of nodes where each node contains a data field and a reference(link) to the next node in the sequence.
• Linked lists consist of nodes where each node contains a data field and a reference(link) to the next node in the sequence.
• Computer Science is the scientific and practical approach to computation and its applications.
• Computer Science is the scientific and practical approach to computation and its applications.
• Arrays are a collection of elements identified by an index or key.
• Arrays are a collection of elements identified by an index or key.
• Arrays are a collection of elements identified by an index or key.