3721C
Analog output is the analog output of the computer or control system, in the MCU control system, the output signal in the analog amount of many, they are the MCU output digital signal after analog output channel processing. The task of analog output channel is to convert the digital signal processed by computer into analog voltage or current signal through data bus and isolation device, and then through D/A converter, which is amplified to drive the corresponding actuator, so as to achieve the purpose of control.
The analog quantity refers to the quantity that the variable changes continuously in a certain range; In other words, you can take any value within a certain range (domain). Digital quantities are discrete quantities, rather than continuously varying quantities, and can only take several discrete values, such as binary digital variables can only take two values