DISPLAY OPERATION DEVICE AND PROGRAM, AND IMAGE FORMATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a display operation device in which operation mistake can be reliably prevented when input operation and display of a result of the input are performed.SOLUTION: A display operation device includes: an operation input unit 13 for receiving input by input operation of an operation key 19 and release of the input operation; a provisional display unit 15 for provisionally displaying an input result corresponding to the input operation on a screen while the input operation of the operation key 19 is held without being released; and a determination display unit 17 for determining or resetting display of the input result to determinately display when a predetermined time elapses while the input operation being held.