Medical diagnostic apparatus and operating method thereof

Medical diagnostic apparatus operating method according to an embodiment of the present invention, each of the basis of the sequence of user input, the method comprising: changing the operating state of the medical diagnostic device from the first state to the second state, the user input storing a history relating to the corresponding plurality of operation for the state, the method comprising: receiving a recovery input, based on the restoration entry, select the third state of the plurality of operating states included in the history, and the It can include changes to the third state the operating state of the medical diagnostic device from the second state.