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Describe the advantages of using digital signals instead of analogue signals.
Analogue signals can take any value, whereas digital signals can only take 0 or 1. Therefore, when digital signals are regenerated (noise is removed), it is easy to tell the values. Also, digital signals can carry more information.
What type of signal do optical fibres use?
Digital
What is 6 in binary code?
00000110
What is 67 in binary code?
01000011
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