classes:  lecturer. need to change the computer system in some practice rooms because it is too old, not enough configuration for practice.  curriculum. need to change the computer system in some practice rooms because it is too old, not enough configuration for practice.  facility. need to change the computer system in some practice rooms because it is too old, not enough configuration for practice.  general. need to change the computer system in some practice rooms because it is too old, not enough configuration for practice.