Cambridge IGCSE Computer Science
1Data representation
Data representation in Cambridge IGCSE Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
Topic210 practice questions11 lessons
In this topic
Lessons
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Binary addition and overflow
30 min
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Converting between binary and denary
30 min
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Hexadecimal: conversions and uses
35 min
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Logical binary shifts
25 min
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Number systems: why computers use binary
25 min
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Two's complement: negative binary numbers
30 min
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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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Calculating image and sound file sizes
35 min
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Data compression: lossy and lossless
30 min
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Units of data storage
25 min
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