Cambridge IGCSE Computer Science
1.2Text, sound and images
Text, sound and images in Cambridge IGCSE Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic39 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 1.2.1Explain how text is represented using character sets, including ASCII and Unicode.
- 1.2.2Explain how sound is represented and the effect of sample rate and sample resolution.
- 1.2.3Explain how images are represented and the effect of resolution and colour depth.
Lessons
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Representing sound and images in binary
35 min
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Representing text: ASCII and Unicode
30 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
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