Figure 1: from https://www.arrow.com/en/research-and-events/articles/engineering-resource-basics-of-analog-to-digital-converters
It shows how the analog signal in blue is turn to digital signal in red.
It is quite common that a microcontroller has ADC converter. For further details, you can always search the datasheet of microcontroller. You can get it from below website for example. Look for the section Analog to Digital Converter in the datasheet. You can see the ADC registers under the section.
https://ww1.microchip.com/downloads/en/DeviceDoc/doc2467.pdf
For example of the ECG machine, after the sensor data (voltage) is transmitted to the microcontroller through port, the analog signal is convert to digital number so that it can be further process or output the result in LCD/screen etc.
No comments:
Post a Comment