PURPOSE: To provide a display apparatus of an injection molding machine wherein a calendar displaying type [kind of the language and displaying type of the name of an era (the calendar)] in accordance with the selection of a user can be selected.

CONSTITUTION: By calling out the initially set mode image on date and time and selecting required displaying language on date/week day and type of the name of era (the calendar) on the set mode image by means of a cursor movement, a calendar display with a displaying type designated by an operator is performed on a display apparatus 5 by means of a microcomputer 1 controlling the whole machine contg. the display apparatus.