Cambridge AS & A Level Computer Science
1Information representation
Information representation in Cambridge AS & A Level Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
Topic130 practice questions6 lessons
In this topic
Lessons
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Character sets: ASCII, extended ASCII, Unicode and EBCDIC
40 min
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Negative binary integers and binary arithmetic
50 min
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Number systems: binary, denary, hexadecimal, octal and BCD
45 min
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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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Data compression: lossless, lossy and run-length encoding
40 min
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