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Data representation

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Question 25

A high-resolution retinal scanner at an eye clinic captures digital images of the human macula.

One of the captured diagnostic scans is 3072 pixels wide and 2048 pixels high.

Construct an expression to calculate the total number of pixels in this scan.

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Markscheme

Data representation Questions

  1. GCSE
  2. /Computer Science
  3. /Data representation

40 exam-style questions on Edexcel GCSE Computer Science Data representation, covering Encoding characters with 7-bit ASCII, Representing bitmap images in binary, Representing analogue sound in binary, and Limitations of binary representation. Each one has a worked solution and a mark scheme showing where the marks go.

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