Digital

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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]

Description

Digital is a number. It can be represented in various forms, such as beads on a string, electrons, or waveforms. When operating on digital information, the focus is on manipulating numbers, regardless of the physical representation. The correctness of the digital manipulation is determined by the accuracy of the output number, not the method used to achieve it.* [2]

In electronics

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

In synthesizers

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).[3]

Uses

References

  1. ^ Video Explains Why Difference Between Analog, Digital Isn’t What Most People Think by Peter Kirn, 29 July 2013
  2. ^ Interview of Robert “Bob” Dobkin by David Laws, Computer History Museum, 30 July 2014
  3. ^ Very poorly written and non technical, Digital synthesizer talk page, Wikipedia

External links

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