1. An object-image displaying apparatus comprising: part-pattern memory means for storing plural sorts of part patterns, each sort of part patterns representing one of parts which compose an object; display means for displaying an image of the object; a plurality of operation switch means disposed at positions corresponding respectively to locations of the parts in an object image to be composed, each for reading out a part pattern of the relevant part from said part-pattern memory means; and display control means for controlling said display means to display an object image composed of a combination of part patterns read out by said plurality of operation switch means.