To provide a perceptible reply regarding success of command input to an operator even when a display is not observed or can not be observed.

An electrically drivable means 5 for generating a first signal perceptible in terms of the sense of touch by an operator in a touch position of an operation surface 8 depending on generation of a command signal is attached to the operation surface 8; the electrically drivable means 5 includes a locally drivable piezoelectric layer 6, and generates a signal perceptible in terms of the sense of touch in the form of one or more local mechanical shocks or local mechanical vibrations generated by deformation of the piezoelectric layer 6; a second signal perceptible in terms of the sense of touch for indicating a user that a local display range for command input is in an active state is generated through the means 5 before sufficient touch is carried out; and the first signal perceptible in terms of the sense of touch and the second signal perceptible in terms of the sense of touch are different in frequency or in mechanical shock.