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The difference between analog and digital signals.

Digital and analog signals are a means of representing information. Digital signals can only take certain discrete values, such as two in the binary system, e.g. high and low.[1]


Commonly seen as e.g. TTL and CMOS ICs and microcontrollers.


Digital synthesizers operate entirely in the digital domain with the waveforms and aparent processing of them (such as FM) being derived mathematicaly from data. The data stream is converted to an analogue waveform by the use of DACs (Digital to Analogue Converters). Digital synthesizers produce an analogue waveform (as a variable voltage electrical signal) at the outputs (i.e. the jack sockets).[2]



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