Abstraction in Computer Science

What is abstraction?

• The process of filtering out unnecessary detail

• The process of filtering out irrelevant characteristics

• The process of filtering out irrelevant characteristics and unnecessary detail

What is a model?

• A representation of a problem

• A computer program

• A spreadsheet

Which characteristic is not needed on a map?

• Roads

• Buildings

• Wildlife

When creating a cat with a computer which of these can we leave out?

• Cats meow

• Cats have 2 ears

• Cats have long tails

Houses have walls, doors and people in them. Which of these DON'T we need to know to draw a house?

• It has doors

• It has windows

• It has 3 people living in it

When we make a car for a computer game which of these don't we need to know?

• If they have wheels

• What colour they are

• Who paid for it

What is an algorithm?

• A sequence of instructions on how to solve a problem.
• The breaking down of a problem into smaller parts.
• Focusing on important parts and ignoring the irrelevant details
• The recipe for a cake

Which of the following is not done by abstraction?

• Identifies essential details

• Disregards non-essential information

• Breaks the problem down into smaller tasks

When designing a building that must be accessible for wheelchairs, which of the following characteristics is non-essential?

• Number of doors

• Number of walls

• Number of wall paintings

You could use abstraction to replace specific objects with simple shapes

• True

• False