Input processing system and image processing apparatus

An input processing system including a plurality of input apparatuses, a processing apparatus, a setter that sets an operation of the processing apparatus in accordance with an input entered through an input operation performed on an input apparatus, and a controller that determines an automatic-clear time for the input apparatus. A different automatic-clear time is determined for each of the plurality of input apparatuses. If another input operation is not performed on the input apparatus during the determined automatic-clear time, the controller executes an automatic-clear function to clear the set operation to an initially set default.