Coding Systems (AQA A-Level Computer Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a key limitation of ASCII?
What is a key limitation of ASCII?
Cannot represent all global languages
What is the main limitation of parity checking?
What is the main limitation of parity checking?
Can detect errors but cannot correct them
How does majority voting detect errors?
How does majority voting detect errors?
Transmits data multiple times & compares
What is the weakness of simple check digit methods?
What is the weakness of simple check digit methods?
Transposed numbers give same check digit
What formula calculates bit-mapped image storage?
What formula calculates bit-mapped image storage?
resolution × colour depth
What is a key advantage of vector graphics over bit-mapped images?
What is a key advantage of vector graphics over bit-mapped images?
Perfect for scenarios requiring rescaling
When is an ADC required?
When is an ADC required?
Converting analogue input to digital form
What is an advantage of MIDI files?
What is an advantage of MIDI files?
Much smaller size & faster loading
What does Nyquist's Theorem state about sampling rate?
What does Nyquist's Theorem state about sampling rate?
Sample at least twice the highest frequency
What defines lossless compression?
What defines lossless compression?
No data is lost during compression