Cambridge AS & A Level Computer Science
1.2Multimedia: graphics and sound
Multimedia: graphics and sound in Cambridge AS & A Level Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic45 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 1.2.1Explain how a bitmap is encoded and estimate its file size from resolution and colour depth.
- 1.2.2Explain the effect of changing resolution or colour depth on image quality and file size.
- 1.2.3Explain how a vector graphic is encoded using a drawing list, and justify a bitmap or vector graphic for a task.
- 1.2.4Explain how sound is sampled and encoded, and the effect of changing the sampling rate and resolution.
Lessons
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Bitmap images and vector graphics
45 min
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Sound: sampling, sampling rate and resolution
40 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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