Sending Signals (7.12) (03/06/2024)

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A telecommunications system, such as a telephone system, involves a contiunous or _____________  signal being____________   into a digital signal. Digital being a signal that is represented by numbers, usually 1s and 0s or ___________  . It then passes along the _________________  path to a ____________  , which changes it into useful information again. 
The signals may be changes in voltage, intensity of light or changes in the strength or frequency of radio waves. They may be transmitted using wires, __________________   or radio waves

What does RFID stand for?

This image shows part of a telephone system. Answer the questions below ...

1

What is the job of the laser diode?

1

What is the job of the photo-diode?

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What does RFID stand for?

What is the job of the laser diode?

What is the job of the photo-diode?

Give two advantages of sending digital rather than analogue signals