External interruption, the main loop in the display program cannot execute, before and after the statements are able to carry out, according to the statement can't perform, sometimes display screen will display abnormal appeared some of at sixes and sevens, see some say it's because of the disruption, remove the interrupt signal display is normal, after interruption shut down some time in the program cannot display properly, if the interrupt opened at the beginning, and then remove the interrupt signal will not show again, only is removed before the program is running the interrupt signal will show the three according to the statement, inquire of bosses, what reason is this how to solve,