Edexcel•GCSE•Computer Science
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Data
Binary, hexadecimal, data representation, and compression
Practice 43 subtopics in Data. All questions match the Edexcel GCSE specification.
About Data
Data is a key topic in the Edexcel GCSE Computer Sciencespecification. This topic covers binary, hexadecimal, data representation, and compression.
Master all 43 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (43)
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Binary (base 2)Denary (base 10)Hexadecimal (base 16)Converting binary to denaryConverting denary to binaryConverting binary to hexadecimalConverting hexadecimal to binaryConverting denary to hexadecimalConverting hexadecimal to denaryBinary additionOverflowBinary shiftsLeft shift (multiply by 2)Right shift (divide by 2)BitNibbleByteKilobyteMegabyteGigabyteTerabytePetabyteASCIIExtended ASCIIUnicodeCharacter setsPixelsResolutionColour depthImage file size calculationBitmap imagesMetadataAnalogue vs digitalSamplingSample rateBit depthSound file size calculationNeed for compressionLossy compressionLossless compressionRun-length encoding (RLE)Dictionary compressionHuffman coding
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Start with Binary (base 2)