A function setting device includes a first operator and a second operator. The first operator is operated for selecting one function item from among plural function items forming a first menu and for setting the selected function item and for then selecting one function value from among plural function values of the set function item forming a second menu and for setting the selected function value, the second menu being provided for each function item. One function item is assigned to the second operator. The second operator sets the selection of the assigned function item when the second operator is operated for the first time and selects one function value from among plural function values of the set function item forming the second menu every time the second operator is operated for a subsequent time.