Character Encoding (AQA GCSE Computer Science): Quizzes
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Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is character encoding?
What is character encoding?
A system converting text to binary code
What is a character set?
What is a character set?
A complete list of characters a system can display
How does increasing bits per character affect the character set size?
How does increasing bits per character affect the character set size?
More bits allow a larger character set
What does ASCII stand for?
What does ASCII stand for?
American Standard Code for Information Interchange
How many bits does ASCII use to encode each character?
How many bits does ASCII use to encode each character?
7 bits
How many characters can ASCII represent?
How many characters can ASCII represent?
128 characters
How many letters does ASCII include?
How many letters does ASCII include?
52 letters (26 uppercase, 26 lowercase)
How many bits does each ASCII character use for storage?
How many bits does each ASCII character use for storage?
8 bits (1 byte)
Why was the extra bit added when storing ASCII characters?
Why was the extra bit added when storing ASCII characters?
For error-checking
Why was Unicode developed?
Why was Unicode developed?
To support characters from all world languages
How many bits per character does Unicode use?
How many bits per character does Unicode use?
16 bits or 32 bits
How many characters can 16-bit Unicode represent?
How many characters can 16-bit Unicode represent?
65,536 characters
How is Unicode backward compatible with ASCII?
How is Unicode backward compatible with ASCII?
First 128 Unicode characters match ASCII codes