I have two 16F84 ('slaves') each reading an 8button keypad. I configure =
portb of each PIC to read the input. I need to send the 8bit input state =
to a 'master' (probably a 16F877) once there is a change (a button is =
pressed or released). Can i do it just using an RX and a TX line? how? =
if not possible, what else do you suggest?=20
many thanks

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