An image forming apparatus having a display unit for displaying a program which can be executed in the apparatus has an input unit for inputting a program into the image forming apparatus. A display control unit controls a process for displaying select keys including a plurality of select keys to instruct a selection of a desired one of a plurality of programs stored in the image forming apparatus onto a display screen displayed on the display unit. A discriminating unit discriminates whether or not the select key to instruct a selection of the program inputted by the input unit can be further displayed onto the first display screen to display the select keys corresponding to the programs registered in the image forming apparatus in response to the input of the program from the input unit.