Are there predefined keywords/codes that when sent from a pic to a computer running windows (UART) can elicit certain actions (like show a special pattern or open a picture on the screen) on the computer directly without requiring to program a special app to process the signals sent (like VB.net)?

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    \$\begingroup\$ There are codes with traditional meanings but nothing happens without appropriate software to recognize them, which would not typically be running by default on a modern PC. Computer usage questions are off topic here. Further as you've not even stated a specific goal, non-specific questions are off topic across the whole SE system. \$\endgroup\$ – Chris Stratton Dec 22 '19 at 21:02
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    \$\begingroup\$ downvote, because you are assuming that we know what operating system is being used on the computer and for assuming that we know what "certain actions" means \$\endgroup\$ – jsotola Dec 22 '19 at 21:25
  • \$\begingroup\$ @jsotola I have edited the question \$\endgroup\$ – mohamed Dec 22 '19 at 21:58
  • \$\begingroup\$ it seems like you are not asking a direct question ... if you wish to display a picture on the screen, then say so ... do not ask some vaguely related question \$\endgroup\$ – jsotola Dec 22 '19 at 22:04
  • \$\begingroup\$ instead of asking is there a road between Glasgow and London?, ask how do i get from Glasgow to London by road? \$\endgroup\$ – jsotola Dec 22 '19 at 22:08

No, there aren't. If nothing else, it would be a security nightmare for anyone who used serial comms to connect to other systems.

Exception: Some systems allow you to use the serial port as the "console". If that's the case, then you get access to a command prompt, at which you can enter any command you like.

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  • \$\begingroup\$ @jsotola True, if you set up a serial console. i will edit the answer. \$\endgroup\$ – Simon B Dec 22 '19 at 22:23

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