IGCSE Computer Science · Chapter 1
Data representation
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InteractiveNumber Systems1.1 Binary, denary and hex conversions, addition and overflow, logical shifts, two's complement, labs and exam questions.Open →
InteractiveText, Sound and Images1.2 ASCII and Unicode, sampling, pixels and colour depth, file size calculations, labs and exam questions.Open →
InteractiveIGCSE Compression LabRun-length encoding step by step, RLE on a bitmap, encode and decode tasks, lossy sliders and real-world examples.Open →
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Exam skillsTwo's Complement: Every Question TypeWhat each two's complement question is asking, which method to use, model answers, animations, labs and a drill.Open →
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