Analogue and digital signals (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the key characteristic of an analogue signal?
What is the key characteristic of an analogue signal?
It is continuous
How many values can a digital signal take?
How many values can a digital signal take?
Two values
In digital circuits, what voltage typically represents the 'on' state?
In digital circuits, what voltage typically represents the 'on' state?
5V
How many bits are in a byte?
How many bits are in a byte?
8 bits
What is the decimal value of the binary number ?
What is the decimal value of the binary number ?
10
What are the three steps in converting analogue to digital using an ADC?
What are the three steps in converting analogue to digital using an ADC?
Sampling, quantisation, encoding
What is the minimum sampling rate to accurately represent an analogue signal?
What is the minimum sampling rate to accurately represent an analogue signal?
Twice the highest frequency
How many possible values can a -bit ADC represent?
How many possible values can a -bit ADC represent?
8
Which is an advantage of digital signals over analogue signals?
Which is an advantage of digital signals over analogue signals?
Less affected by noise
What do regenerators do to combat noise in digital signals?
What do regenerators do to combat noise in digital signals?
Filter by switching at voltage levels