A high-fidelity digital art scanner captures images with a colour depth of d d\,d bits. If the scanner is designed to represent up to 262 144 262\,144\,262144 unique colours, determine the required colour depth, ddd, in bits.
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Markscheme
Representing images Questions
26 exam-style questions on AQA GCSE Computer Science Representing images. Each one has a worked solution and a mark scheme showing where the marks go.