Digital systems without digital to analog converter can sound nice

An exemption can be the Yamaha DX7 which has a D to A and can sound nice too.


Examples can be:


Elctronic musical instruments havinf as source of sound a direct square, triangular wave etc.


For example:


Solina String Ensemble


An Italian EKO organ


A Farfisa? organ (Tubular bells intro for example?)


An Amstrad CPC464 or other vintage computers' AY sound chip.


Even a 300 year old pipe organ may be considered a digital system without a D to A. Musician plays keys. Mechanical levers (array) arrange which flue pipes will open. Then analog pipes vibrate (molecules inside them vibrate).


Definition of analog:
A quantity which has infinite values between 2 values.


Definition of digital:
A quality which has finite values between 2 values. For example the number of persons in a room.


Thinking about it a square wave is analog as from 0 to say +Vb electric potential quickly passes from all values.


But in fact nothing is true analog. Even in analog electronics we have resolution of electrons but it can be thought of as almost infinite bit resolution.


A Fisher Price toy cassette recorder can send for tea a mega digital computer.