PURPOSE: To successively select the choice of the selection item every time a bar is brought down and to select a desired choice by installing a switch type washing system input part provided with the normally vertical bar tiltable in optional direction and angle and the display part of the choices of the respective selection items. CONSTITUTION: In the case of selecting the washing time of 7 minutes from selection contents for a washing method, when the bar 2 is tilted once in a direction where 'washing' is displayed in a selection item display part 3, 7 minutes is selected from 10 minutes selected at present. Further, when it is tilted once more, 3 minutes is selected. Similarly, in the case of selecting rinsing for one time, when the bar 2 is tilted once in the direction where 'rinsing' is displayed in the item display part 3, the rinsing for one time is selected. In the case of selecting water injection for one time, when it is tilted once again in the direction where 'rinsing' is displayed, the water injection for one time is selected. It is similar for dehydration and water levels as well. In such a manner, the choices in respective selection stages are selected in one washing system input part 1 and the display is displayed in one display part 4.