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KS3 Computing
Computer Science
Character Sets
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What is the purpose of a character set in computers?
To convert characters to unique binary numbers
How many lowercase letters can be made with a keyboard?
26
What is an example of an invisible character?
Space
If two computers do not use the same character set, what might happen?
The message sent from one to another could be unreadable
What does ASCII stand for?
American Standard Code for Information Interchange
How many unique characters can ASCII represent?
128
Why can ASCII only represent English characters?
Because it has only 128 unique characters
What is Unicode?
A universal character set that includes characters from all languages
If a computer cannot recognise a Unicode character, what might it show?
A black rectangle
Which character set is used by computers to represent many different characters from around the world?
Unicode
Why do we need to convert characters to binary numbers in computers?
Because computers can only understand binary code