T-Level DPDD: Abstraction Flashcard

Front

What is the process of removing or filtering characteristics that are not needed to focus on essential characteristics called?

Back

Abstraction

Front

What does abstraction in computational thinking involve?

Back

Hiding the complexity of something from the user

Front

What is an example of abstraction in a computer system?

Back

The user presses the power button and the computer turns on

Front

What is hidden from the user when they press the power button on a computer?

Back

The process of powering up and loading the operating system into RAM

Front

Once an abstraction layer has been identified, the layer can be described fully by what?

Back

Its inputs, outputs, variables, constants, key processes and repeated processes

Front

What are the inputs and outputs of a system?

Back

Inputs are what goes into a system, and outputs are what comes out of it.

Front

What is the role of variables in abstraction?

Back

They are values that will change

Front

Which of the following is an example of a variable in a system?

• The mathematical constant pi (π)
• The temperature taken at different times of the day
• The number of customers
• The average age of the customers

Back

The temperature taken at different times of the day

Front

What is a constant?

Back

A constant value

Front

What is a well-known example of a constant in a system?

Back

The mathematical constant pi (π)