Posterous theme by Cory Watilo

3.23

3.23

10 February 2011

14:56

·         3.23 understand the difference between analogue and digital signals

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·         Analogue signals vary continuously

·         Digital signals are discrete - they are either 1 (on) or 0 (off)

·         Data stored as a stream of 1s and 0s is called "binary code"