1. An electronic device comprising: an operating unit including a storing unit that stores therein a plurality of different display language data that is switchable according to a use environment of a user, a selecting unit that selects a display language data from the storing unit in response to display language specification information supplied from a main unit of the electronic device at a time of starting the electronic device, and a displaying unit that displays an operation screen with the display language data selected by the selecting unit, wherein when the display language specification information is not supplied from the main unit, the selecting unit selects a predetermined display language data according to a difference between the display language data stored in the storing unit and display language data set in a factory setting.