Analogue Signals: informatiom > electrical voltages/currents that vary > amplified wave
+ fine definition
- when amplified acompanying noise is amplified as well
- it takes a wider range of freequencies to broadcast an analogue signal
Digital Signals: information > binary code ( 0 & 1) > series of electrical pulses
+ regeneration creates a clean accurate copy of the original signal
+ easier to design and build
+ data that are easier to process
+ more programmes can be broadcast over the same freequencies
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