EDEXCEL GCSE CS Summary

Front

Decomposition in programming:

Back

Breaking down problems into smaller parts

Answer explanation

Decomposition helps in simplifying complex problems by breaking them down into manageable parts.

Front

Abstraction in computer science

Back

Hiding complex details

Answer explanation

Abstraction involves hiding complex details to simplify the interface and make the system easier to use.

Front

Benefit of subprogrammes?

Back

Reducing code redundancy

Answer explanation

Subprograms help reduce code redundancy by allowing code reuse.

Front

Algorithm: A set of instructions to solve a problem

Back

A set of instructions to solve a problem

Answer explanation

An algorithm is a step-by-step procedure for solving a problem or performing a task.

Front

Structure for decision-making in algorithms

Back

Selection

Answer explanation

Selection structures allow decision-making based on conditions within an algorithm.

Front

A type of loop that runs a set number of times.

Back

Count-controlled loop

Answer explanation

A count-controlled loop runs a specific number of times, defined by a counter.

Front

Key feature of a while loop:

Back

Executes code whilst a condition is true.

Answer explanation

A while loop continues executing as long as the given condition remains true.

Front

Denote a variable in pseudocode.

Back

SET

Answer explanation

In pseudocode, the SET command is often used to assign a value to a variable.

Front

Arithmetic operator:

Back

*

Answer explanation

The asterisk (*) represents multiplication, which is an arithmetic operation.

Front

What is the purpose of a trace table?

Back

To track variable changes.

Answer explanation

A trace table is used to track the values of variables at different points during algorithm execution.