Dear frien checking the busy flag its good one.using the busy flag we can find out what process going on the lcd.i.e wheather when busy flag is high means .the lcd internal controller doing some work.so we need to wait upto the lcd controller finishes its work.we can find out the status using the flag.when the flag goes low it means ,lcd controller is ready to accept our command/data oriented object.i thing above is usefull for u