The microcontroller is small thing give you a good control on other things,,
like ==> smart home <== by microcontroller you can control eny thing in home
that's doors ,windows, fans & alot...
you can make any doors& windows open and close automatic by sensors;;
you can make fans open &close auto by thermal sensors..........................
these is sample microcontrollers......at Plants a higher microcontrollers like (dcs)&(plc)...