Representing Characters (OCR GCSE Computer Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How many bits does ASCII use to represent characters?
How many bits does ASCII use to represent characters?
7 bits
How many unique characters can ASCII represent?
How many unique characters can ASCII represent?
128
How many bits does Extended ASCII use?
How many bits does Extended ASCII use?
8 bits
How many characters can Extended ASCII represent?
How many characters can Extended ASCII represent?
256
How many bits does Unicode use to represent characters?
How many bits does Unicode use to represent characters?
16 bits
How many possible characters can Unicode represent?
How many possible characters can Unicode represent?
65,536
What is the binary code for the character 'A' in ASCII?
What is the binary code for the character 'A' in ASCII?
01000001
What is the binary code for the character 'B' in ASCII?
What is the binary code for the character 'B' in ASCII?
01000010
What is the main problem with ASCII?
What is the main problem with ASCII?
Cannot represent all languages & symbols
Which character encoding is typically used in GCSE exams?
Which character encoding is typically used in GCSE exams?
8-bit ASCII
What does it mean that character sets are logically ordered?
What does it mean that character sets are logically ordered?
Binary for 'B' is one more than 'A'
Can arithmetic be performed directly on ASCII character representations of numbers?
Can arithmetic be performed directly on ASCII character representations of numbers?
No, must convert to pure binary first