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Revision Notes
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GCSE Computer Science
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Data Representation
Data Representation — GCSE Revision Notes
5 notes on Data Representation for GCSE Computer Science.
Binary and Denary
Why computers use binary Computers are built from transistors that…
Hexadecimal
What hex is Hexadecimal ( hex ) is base 16 — a human friendly…
Binary Arithmetic and Shifts
Adding binary Work right to left, carrying when a column reaches 2: 0…
Characters, Images and Sound
Characters Text is stored using a character set mapping each…
Compression
Why compress? Smaller files use less storage and transfer faster over…
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