PROBLEM TO BE SOLVED : To provide an electronic patient nursing system and a device reducing medical errors. SOLUTION : Medical equipment includes : a controller which controls operation of a pump mechanism to feed medicine and is programmed by using a medicament library; a processor; a graphical user interface to be used for programming the controller; and a computer readable memory for storing program codes for the medicament library. The processor generates screens to be displayed to the graphical user interface, at least one of the screens includes user input value, responds to a change of a digit number of the user input value, and visually changes a font of the user input value. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2019, JPO&INPIT