The Raspberry Pi itself has no analog inputs. However, there are extension boards available (e.g. the UniPi board) which provide 0-10V analog inputs and outputs. Or you can use Modbus TCP modular I/O systems like Turck BL20 or Wago 750 series to provide industrial I/O for your Raspberry Pi.If you are working in the microcontroller domain, then the Raspberry Pi has two 3.3V PWM outputs, which can be considered "analog outputs". Apart from that, you can easily connect AD an DA converters via SPI or I2C bus (MCP3008, MCP3422, etc.).
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