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Data compression

Data compression

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Question 4

When a Huffman tree is used, the string in Figure 1 can be represented using 98 bits.

Figure 1

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The 24-character string shown in Figure 1 could also be encoded using standard 8-bit ASCII.

How many bits are saved when Huffman coding is used rather than ASCII to represent the string shown in Figure 1?

You must show your working.

[2]
Markscheme

Data compression Questions

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

37 exam-style questions on AQA GCSE Computer Science Data compression. Each one has a worked solution and a mark scheme showing where the marks go.

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