| 摘要 |
An operation history apparatus includes an operation history data storage configured to store an operation history data, an operation receiving module configured to receive an operation from a user, and a history tabulation module configured to perform tabulation on the operation history data using as tabulation item, display a graph representing a result of the tabulation, and display, when receiving a designation of a value representing part of the graph via the operation receiving module, operation history data corresponding to the value representing part in a list form. |
