Hi all!….
I want control 40 different devices from my PC and am using pic16f877a. I have tried with single characeter transmission auomtation.
I need 80 commands for controlling 40 relays,
but badly, only 26 alphabet(lower case), 26 upper case , numeric 0-9. totally 26+26+10=62 (62/2=31 devices).
how to access two caracetr? any idea?