| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a key operation history storage device, capable of selectively saving a necessary operation history even with a small storage capacity. <P>SOLUTION: The key operation history storage device 31 incorporated in a digital complex machine comprises a temporary storage area 35 for temporarily storing identification information of operated keys in the order of operation every time when key operation is performed; an operation history storage area 37 for storing operation histories of keys; and a control means 33 for writing, when a predetermined key is operated, identification information of the predetermined key stored in the temporary storage area 35 and identification information of each key of a predetermined number of keys which are operated before the operation of the predetermined key in the operation history storage area 37 as an operation history. <P>COPYRIGHT: (C)2007,JPO&INPIT |
