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Digital and Analogue signals

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(Physics) Science Fichas sobre Digital and Analogue signals, creado por Bradley Sansom el 02/03/2014.
Bradley Sansom
Fichas por Bradley Sansom, actualizado hace más de 1 año
Bradley Sansom
Creado por Bradley Sansom hace más de 10 años
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Image: digital (image/jpg)
Digital signals consist of 2 states: On (1) and Off (2).
Image: analogue.gif (image/gif)
Analogue signals can vary in frequency and amplitude. Analogue signals are used in FM (Frequency Modulated) and AM (Amplitude Modulated) radio.
What are optical fibres? Optical fibres are thin rods of glass. Light going in from one end goes under repeated total internal reflection and emerges the other end. Information such as computer data and telephone calls can be converted into eletrical signals.
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