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Cambridge IGCSE Computer Science practice

Paper 1 structured question: Text, sound and images

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Attempt questionText, sound and images revisionRevise the key idea

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Text, sound and images

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Paper 1Computer Systems1 marks

Understanding character encoding is essential in computer science.

Description

Character Encoding

Character encoding is the method used to represent text in computers. ASCII and Unicode are two common character sets used for this purpose.

  1. a

    State the main difference between ASCII and Unicode.

    Aim for approximately 1 distinct marking point.

    [1]

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Answer every part before opening the mark scheme.

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Paper 1 structured question: Text, sound and images

Paper 1Computer Systems6 marks

Description

Character Sets

ASCII is limited to basic Latin characters, while Unicode can represent a wide variety of characters, including emojis and symbols from different languages.

  1. a

    Explain why Unicode is necessary for modern computing.

    Aim for approximately 6 distinct marking points.

    [6]