That all looks VERY confusing ! The usual way to interlace 7 segment displays is to hook up all the "a" segments together, all the "b" segments to each other . . . and you use1 port per display unit to decide which display is illuminated. . . . I am beginning to see . . . you are using LCD on the demo board . . . pins scattered all over the micro controllers ports . . . look at this link:http://www.picbasic.co.uk/forum/showthread.php?t=3753