Orologio 4x7 segmenti RTC3231 auto DST

[Datman]

Le basi:
https://playground.arduino.cc/Learning/PortManipulation/

arduino-mega2560-schematic.pdf

Arduino mega 2560 using PORTS

oqibidipo: In other words, they are digital pins that can also be used as analog inputs. Are they not 'physical pins' which could be connected to: (a) external digital devices and the signals could be routed to the internal Digital Module/Port, (b) external analog devices and the signals could be routed to the internal ADC Module/Port?

PortManipulation page lacks information about Arduino Mega

The mapping is available in the schematic: True, but it's not in a convenient tabular form. Rob