My PFE is to make an interface as Windev. I want to use the RS232 link between the interface and the PIC16F877. My card based in one master and three slave. The master is the process and the process has three indicators each indicator was then a PIC slave. Then each value will be transmitted from the interface to the PIC master that will select which indicator will be passed this value process and I program with picc compiler (ccs_4.57). so my problem is how to send values (percentages) of the interface to the PIC master who will send them to other slaves who will display on lcd 2*16 .Thank you