Analogue and Digital Signals

Analogue and Digital Signals

1. Information is converted int signals

   • Digital or analogue signals

2. Analogue Signals vary but digital are either on or off

   • Amplitude of an analogue signal varies continiously
   • Digital signals can take only discrete values (true/false)
     • The EM carrier is switched on and off
     • Short pulses are madme

3. Signals have to be amplified as they get weaker as they travel and they pickup noise from their journey

4. Digital signals are better quality as you can see whether it is supposed to be on or off which is unlike an analogue signal