1What is signal transmission? Give one example.
2Why does a medium wave radio broadcast sometimes sound unclear?
3Why are analogue signals digitised? Give three advantages of a digital system.
4Name the components of a digital communication system in the order a signal passes through them.
5What is a transducer? Compare the input transducer and the output transducer with one example of each.
6What does the encoder do, and how does it help with bandwidth?
7Write the difference between a modulator and a demodulator.
8What is the role of the decoder in a digital communication system?
9Write four differences between analogue communication and digital communication.
10A voice sent through a digital system is still heard as a voice at the other end. Which part makes this true, and what is the final result called?